CN108761564A - A kind of Cenozoic Magmatic Cu Polymetallic Mineralization Belt method - Google Patents
A kind of Cenozoic Magmatic Cu Polymetallic Mineralization Belt method Download PDFInfo
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Abstract
The invention discloses a kind of Magmatic Cu Polymetallic Mineralization Belt methods of new generation.Including：According to Magmatic mineral deposit mine point output space-time and geologic setting delineation Magmatic location or exceptions area (band)；Target prospecting area is tentatively drawn a circle to approve by stream sediment survey and target area is classified；It selects Magmatic copper mine or Molybdenum Mineralization relatively strong in target area is classified or abnormal preferable section carries out high-precision magnetic survey verification, determine the first preferred target area or the first exceptions area；Second preferred target area or the second exceptions area are drawn a circle to approve in the first preferred target area or the first exceptions area using high-definition remote sensing；Inspection is made an on-the-spot survey to the second preferred target area or the second exceptions area, finds out geologic anomaly area (band) or mineralising clue area；Carry out 1:10000 soil profiles or petrochemistry profile survey determine earth's surface geology containing mine body position and mineralising body characteristics；Superficial part, which is carried out, using trenching discloses recourse control mineralized belt or mineralization body specific location form；Mineralization body deep grade thickness scale and occurrence situation are determined using probing, find metal ore or mineral deposit.
Description
Technical field
The present invention relates to geology technical field more particularly to a kind of Magmatic Cu Polymetallic Mineralization Belt methods of new generation.
Background technology
The method of prospecting refers to the general name of the working method and technical measures that are used to find mineral deposit.It is certain to look for mine
Area in find and evaluation finds that the geological and mineral that carries out of the required mineral products of national economy works, i.e. integrated use
The rudimentary knowledge of matter science and theory, use necessary technical method, the clue for offer of reporting where deposits are found in conjunction with the masses, to find various mines
The purpose that miner makees is looked in production, finds mine point, Mineralized Area or mineral deposit, preliminary geology-economy evaluation (industrial Potential Evaluation) is carried out to it
Its task includes：The geological structure in research work area, the especially geological conditions close with mineral products formation and distribution relation, in advance
There may be the beneficial zones of mineral products for survey：The effective technological means of integrated use and method of prospecting are carried out in advantageous location
Mine is looked for, and preliminary research is carried out to the mine of discovery point or mineral deposit.Further to select prospecting for mineral deposits regional (or location) and compiling
National economic development perspective long-term plan processed provides required mineral resources and geology, Technological Economy data etc..
Qinghai-xizang Plateau Region Magmatic Cu mineral deposit point is strictly by Early Himalaya biotite granite porphyry body and country rock (basalt)
The control of contact band, ore body is distributed along Porphyry Bodies top by adosculation band, mineralising power and rock mass and wall-rock crack development degree
It is closely related.Using routine techniques it has been difficult accurately to look for ore locations, Mineralized Area or mineral deposit for above-mentioned complicated landform.
Therefore, it is necessary to be suitable for the Magmatic copper mine method of prospecting of new generation according to above-mentioned complicated landform research is a kind of.
Invention content
In view of this, an embodiment of the present invention provides a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation, main mesh
Be to solve the problems, such as accurately look for mine under intricately condition.
In order to achieve the above objectives, invention broadly provides following technical solutions：
On the one hand, an embodiment of the present invention provides a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation, including it is following
Step：
Mineralization system type is determined according to Magmatic mineral deposit and mine point output space-time characteristic and geology background, draws a circle to approve rock
Slurry type location or geologic anomaly area or abnormal belt；
Stream sediment survey is carried out in the Magmatic location or geologic anomaly area or abnormal belt, mine target is looked in preliminary delineation
Area and to target area classify；
It selects Magmatic copper mine or Molybdenum Mineralization relatively strong in the target area is classified or abnormal preferable section carries out high-precision magnetic
Test card, determines the first preferred target area or the first exceptions area；
Second preferred target is drawn a circle to approve in the described first preferred target area or the first exceptions area using high-definition remote sensing extractive technique
Area or the second exceptions area；
Described second preferred target area or the second exceptions area are carried out making an on-the-spot survey inspection, find out geologic anomaly area or abnormal belt or mine
Change clue area；
1 is carried out to the geologic anomaly area or abnormal belt or mineralising clue area:10000 soil profiles or petrochemistry section are surveyed
Amount, primarily determines earth's surface geology containing mine body position and mineralising body characteristics；
Superficial part exposure, recourse, control mineralized belt or mineralization body specific location, form and its feature are carried out using trenching；
Mineralization body deep grade, the situation of change of thickness, scale and occurrence are determined using drilling technique, finally found that metal
Ore body or mineral deposit.
Preferably, the Cu-polymetallic deposit is based on copper mine or molybdenum ore, the nonferrous metals ore of lead ore and zinc ore is had concurrently
Production.
Preferably, the mineralization system is Collisional orogenisis mineralization system.
Preferably, the mineralization system is Magmatic copper mine or molybdenum ore subsystem；Subsystem delineation, identify with
The high potassium calc-alkaline granite porphyry of copper mine or the related Early Himalaya invasion of Molybdenum Mineralization；The whole of the rock mass is formed in research area
One centered on Narigongma, in Magmatic copper mine from NW-SE to output or Molybdenum Deposit Zone, from NW to SE successively exposure have beat Gu
Tribute card, Narigongma, Lu Ge and Heng Sai blueness Magmatic copper mines or molybdenum deposit point.
Preferably, the concrete operations of the preliminary delineation target prospecting area are：The sampling when stream sediment survey
Density domination is in 4-8 point/km2Within；GeoExplor and Mapgis6.7 software development anomaly associations are utilized to test data
Figure, and carry out commenting sequence in identical host element class, anomaly classification is then carried out according to off-note, geological conditions and ore-prospecting meaning；
The Geological Achievements of calmodulin binding domain CaM geologic feature, previous Geophysical-chemical, placer abnormal tentatively draw a circle to approve target prospecting area, and carry out target area point
Class.
Preferably, the information source of the remote sensing selects IKONOS satellite datas and U.S. ETM+Data；Pass through high-precision
Remote Sensing Interpretation Magmatic copper mine or the mineral products correlation analysis such as Molybdenum Mineralization geologic feature and lead, zinc, be aided with hydroxyl, Ferric contamination anomaly with
Copper, Lead and Zinc resource spatial Correlation Analysis, in comprehensive analysis hydrographic name, high-precision magnetic survey exception, high-precision remote sensing
Interpretation is on the basis of remote sensing abnormal feature, and to predict copper mine or molybdenum mineral resources as direct purpose, synthesis draws a circle to approve out Magmatic
Copper mine or Molybdenum Mineralization area or exceptions area.
Preferably, the geologic anomaly area or abnormal belt or mineralising clue area carry out 1:10000 soil profiles or rock
Learn profile survey concrete operations be：1:The arrangement of 10000 soil profiles is cutd open basically perpendicular to formation strike and abnormal long axis direction
GPS positioning of the face starting point after unified correction, hatching use compass orientation, pedotheque sampled point to construct broken erosion away from 20m
Variable speed location is encrypted to 5m, and sample collection is in the substance of same medium, same layer position, and sample collection is away from earth's surface in 30-50cm depths
Locate in C layers of soil, really do not acquire C layers because covering is thicker, then in B layers of collected downhole, acquires the general 500-1000g of weight, protect
Weight is more than 200g after demonstrate,proving sample sieving；
1:10000 petrochemistry sections are laid should be perpendicular to the direction of strata, GPS positioning after section starting point corrects, using sieve
Disk orients, and the front and back measurement average value for surveying hand is used to the correction of error；Sampled point is away from 10-20m, the encryption of the enrichment of mineralization location
To 10m or less；Identification and analysis is carried out to complex lithology layer position and Mineralization Features acquisition light, sheet-like.
Preferably, described carry out superficial part exposure, recourse, control mineralized belt or mineralization body specific location, shape using trenching
The specific operation process of state and its feature：Earth's surface geology containing mine body position and mineralization body are primarily determined using described, are stepped on the spot
The specific positioning that trenching engineering is carried out on the basis of surveying is arranged in the mineralising location that cladding thickness is no more than 3m, perpendicular to target
Plastid long axis direction, formation strike or total construction line direction arrangement；Slot bottom is wide to be not less than 0.5-0.8m, and depth is not more than 3m,
It discloses fresh matrix and reaches 0.3-0.5m, understand occurrence as principle can observe；Chemical sample slot is arranged in connecing for cell wall and slot bottom
It at conjunction, is used in combination red paint to draw and mark sample number by sample slot on the spot, is sampled using groove engraving, sample slot specification is 10 × 3cm, sample
Product weight error rate is not higher than 10%, and sampled point rock surface is cleaned when sampling, hangs up properly cloth, ensures that sample is not contaminated and splashes
It loses, acquisition method is strictly pressed specification and carried out, and by same orientation, same inclination angle cloth specimen, each sample wants end to end；Except chemical sample
Outside, also the full slot of rock-like is adopted by 2-5m spacing to control；It disclosed by trenching work, recourse, control mineralized belt, mineralization body, tentatively
It finds out mineralising volume morphing, occurrence, scale, draws a circle to approve earth's surface mineralization body.
Preferably, described determine mineralization body deep grade, thickness, scale and the variation feelings of occurrence using drilling technique
Condition finds that the specific operation process in ore body or mineral deposit is：Using the earth's surface mineralization body of delineation, drilling deployment is carried out, it is specific to drill
It is positioned at earth's surface the enrichment of mineralization location, and is specifically positioned with reference to rock mass or attitude of stratum, landform；Drilling project construction is straight
Hole, construction method use large diameter directional drilling technology, whole bore open to be not less than 75mm；Ore body and its mine heart in roof and floor 3-5m,
The rock core taking rate that is averaged is not less than 80%, inside big thick ore body continuous length of the mine heart taking rate less than 90% no more than 5m,
The layering of country rock rock core is averaged taking rate not less than 80%；The method of sampling that drills is along rock core long axis direction and mineralising uniformity
It is split as two halves, half send measuring unit processing chemical examination as fundamental analysis sample, the other half is retained in case checking and studying it
With；In mineralization body up-sampling, cross-layer, the long 1.5m of sample, two side draw circle side sample of mineralization body do not primarily determine mineralising by drilling project
Body deep grade, thickness, scale, the situation of change of occurrence find deep orebody or mineral deposit.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention loses according to Yushu district, Qinghai Permafrost Area Magmatic Cu mineral deposit area geologic feature, ore-bearing formation, mineralising
The features such as variable speed and Ore-controlling factor, it is proposed that " mineralization system+stream sediment survey+high-precision magnetic survey+high-definition remote sensing "
The integrated method of prospecting, achieves huge exploration breakthrough during looking for mine.
Description of the drawings
Fig. 1 is the specific mineral exploration technical flow in Magmatic copper mine area provided in an embodiment of the present invention；
Fig. 2 is provided in an embodiment of the present invention to beat the areas Gu Gongka high-precision magnetic survey (Δ T) isopleth plan view.
Specific implementation mode
For further illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below with compared with
Specific implementation mode, technical solution, feature and its effect applied according to the present invention is described in detail as after in good embodiment.Under
State it is bright in multiple embodiments in special characteristic, structure or feature can be combined by any suitable form.
Embodiment
The present embodiment selection beating for Gu Gongka copper (molybdenum) mine positioned at Narigongma area northwest (NW) section, carries out this and reconnoitres skill
The prospecting result of art method combination is sketched, and Fig. 1 is the present embodiment techniqueflow chart；
1, the more metallic ores of Magmatic Cu and Ore-controlling factor are understood in terms of mineralization system：
It beats Gu Gongka polymetallic ores and is located at Narigongma slurry type type copper-molybdenum Polymetallic Ore Deposit northwest (NW) section, carried on the back in areal geology
The characteristic aspects such as scape, tectonic geology feature, exposure stratum, plutone and Ore-controlling factor have similitude, mineralization system
There is similitude with Narigongma slurry type type copper-molybdenum mining area.
(1) magma source：Initial Sr-Nd-Pb the isotopics of Narigongma slurry type are similar with slurry type with Yulong, place
Near the blend of depleted mantle (MORB) and lower crust, and more drawn close to depleted mantle." in three rivers, northern section slurry type Cu-
The metallogenic belt Mo (Au) shows to bring from the Narigongma of the northwestward and be presented obviously with diagenesis, ore -forming age to the Yulong of the southeast
The regularity successively decreased illustrates that its formation is not only controlled by unified kinetic mechanism, more shows that type containing ore pulp has similar rock
Starch source region.Therefore, the mantle-crust transition zone made of the explanation of subducting slabs fluid and the injection of asthenosphere substance may be Narigongma-
Ideal source region of the Yulong with mineralized porphyry；
(2) metallogenic mechanics：Slurry type type polymetallic ore is controlled by strike-slip fault system and outstretching rift system in land of new generation
System, slurry type magma is shallow at invasion along Strike-slip faulted and its with the foundational fault channel that crosses, and in local tension and stress release ring
Rich lead zinc fluid is segregated under border, forms slurry type type copper/lead/zinc ore；
(3) fluid contained mineral enrichment of ore-forming：Arsenic, gold, copper, zinc have such mineral products in Eocene Epoch granite porphyry
Source rock condition and material base, magmatic activity evolutionary process is the important content of tectonic evolution process, mainly by structure
Make the characteristics of motion to restrict and rift structure control, and magmatic activity is during Cheng Kuang, to the offer of metallogenic material, quench take,
Activate, migrate, be enriched with it is particularly important, when its evolution to certain stage when can be at mine.In conjunction with reality in Eocene epoch granite porphyry
There are copper mine point or mineralising to show in rock mass, that is, porphyry magma is shallow at invading along Strike-slip faulted and its with the foundational fault channel that crosses
Position, and richness Cu fluids are segregated under local tension and stress release environment, it is easy to form slurry type type copper mine.Magmatic activity mainly with
It is secondary to have a small amount of Stage of Yanshan Intermediate-felsic volcanic rocks based on Early Himalaya Intermediate acidity rock.Early Himalaya biotite granite porphyry and light color
Particulate granite porphyry is host rocks.Ore body mainly originates in melaphyre and the silication kaolinization biotite flower hilllock of contact band
In porphyry；
(4) ore control factor：Regional tectonics strictly controls metallogenic belt, northern west Nangqian deep fracture zone as lead rock,
Passable structure controls the spread of Ofregional Ore-forming band.The NW trending and east northeast of the geofracture are used as to secondary fragmentation matches
Rock is constructed with mine, is controlled the distribution of mineralized porphyry body and mineral deposit, is broken the positioning that compound intersection part controls ore body, to
The characteristics of equidistant group variety distribution is spatially presented.Mineralization and the Porphyry Bodies of middle and advanced stage igneous invasion are in close relations, mine
Change and mainly originates in biotite granite porphyry and light particulate granite porphyry, shallow middle acidity at mineralized porphyry intrusive body is most important
Governing factor.
Small-sized fracture-cranny structure system of intense development provides favorably for hydrothermal solution and mineral activity, precipitation in mining area
Space, to for wall rock alteration and mineralization provide sufficient developmental condition.Ore body wall rock alteration-mineralized porphyry body encloses
Stronger and larger face type or face-line style alteration, alteration features have been developed in rock has ring from granite porphyry body to country rock
The trend of zonal distribution shows as slurry type type copper (molybdenum) mineral deposit alteration features.Structural fracture dense degree controls copper-molybdenum mineralising
Power, mineralization intensity is positively correlated with crack dense degree is.
2, stream sediment survey：
1: 5 ten thousand changes AS04, AS05 (AS04, AS05 are the number of the delineation abnormality) exception for visiting delineation, and form is in irregular
Shape, in nearly northwest (NW)-east southeast to spread, Pb, Zn, Ag, Cu fitting are good, are associated with the elements such as Co, Ba, Ga.Cu element anomalies face
Product is larger, and it is extremely peripheral to be distributed in Pb, Zn, Ag, encloses Pb, Zn, Ag exception；Mo element anomalies areas take second place, and are distributed in Cu
Southeast side in element anomalies, essentially coincides with the southeast of Cu element anomalies.Wherein Pb, Zn, Cu, Mo anomaly peak are high, by force
Degree is big, and concentration center understands, has preferable Zoning regularity, especially Cu, Mo extremely particularly evident, has basically reached identical concentration
Position.There are the good granite porphyry body of ore-bearing potential, rift structure development, compared with the area of Narigongma (AS06) exception in exceptions area
Bigger, intensity is high, and point band is apparent.The Abnormality Prospecting foreground is huge, is the strong location for finding Cu, Mo mine.
3, high-precision magnetic signature：
In area large area exposure be Early-Middle permian Kaixinling Group Nuo Ba small day guarantors group volcanic rock, go out in volcanic rock
Open country area magnetic anomaly is more in disorder normal anomaly, and the corresponding magnetic anomaly constant value in the stratum is usually that tens to hundreds of nanoteslas differ,
Corresponding magnetic anomaly is larger positive magnetic anomaly on basalt stratum, and maximum can reach 2000nT.Triassic strata master
If ligaturing the aubergine sandstone of group, mud stone etc., it is weak magnetic or non-magnetic rock, corresponding magnetic anomaly that both lithology, which have,
It is the ambient field of more than ten nanoteslas or so.
Rock mass in area is mainly granite porphyry, while also quartz vein, porphyrite arteries and veins etc., be can be seen that according to magnetic survey achievement
Its corresponding magnetic anomaly is negative magnetic anomaly, and anomaly intensity is generally in tens to hundreds of nanoteslas.
Magnetic signature and explanation are inferred：As shown in Fig. 2, according to abnormal morphology, intensity and residing geology position, Da Gugong
The areas Ka-Na Ema high-precision magnetic survey draws a circle to approve 9 magnetic anomalies altogether, and number is M1-M9.
It is described below at the related main abnormal feature of mine：
M1：Abnormal is the exception of scale minimum in area positioned at the ancient tribute exceptions areas card AS04 South Mountain ridge position is beaten, abnormal strong
Spend weak, abnormal ranges are small, are a negative anomalys for originating in ridge position, to east by north substantially along east by north directional spreding
Direction extends to connect with east negative anomaly, and plane configuration approximation strip is about 4.5km, wide about 0.1-0.8km, abnormal amplitude
Between-1-- 60nT, abnormal intermediate discontinuous, abnormal is the relatively large magnetic anomaly of negative value easternmost, and the east bears magnetic anomaly
There is small-scale positive magnetic anomaly at normal middle part, and entirely the both sides of negative magnetic anomaly are all more in disorder positive magnetic anomalies, in conjunction with probing
Engineering has Porphyry Bodies appearance disclosed in these position deeps, and has three copper/lead/zinc ore arteries and veins (II ore bodies of M), thus infers this exception
Caused by being the mineralized porphyry body at this under earth's surface.
M2：It is abnormal be located at beats the Beishan Mountain Gu Gongka, be western normal anomaly and east bear it is different between a piece of transition negative anomaly, shape
State is irregular；Anomaly intensity is between-60-100nT, in terms of spatial abnormal feature range, is about 2Km, width 2.5Km, which is
Point, which stops, in stable negative magnetic anomaly background the positive magnetic anomaly of star spot shape, has flower in conjunction with the corresponding area of the geologic information exception
Thus the vein exposure of hilllock porphyry infers that there are the little granite porphyry bodies of buried depth for the bottom of volcanic rock in the exception location.
M3：Exception, which is located at, beats the north Gu Gongka, and wide about 2Km is in zonal distribution, and the south is relatively narrow and abnormal in disorder, the North summary
Width, abnormal morphology is irregular, is maximum negative magnetic anomaly in area, between-100-- 900nT, the North stretches into just anomaly intensity
Among the encirclement of magnetic anomaly, but east, all non-trap in south two sides, have the tendency that extending eastward, most of location of the exception is
The Quaternary Period covers, and it is volcanic rock and granite porphyry only to have basement rock exposure with M1 exceptions intersection, is inferred according to off-note, this is different
Normal corresponding area is granite porphyry.
M6：It is abnormal be located at beats the Gu exceptions areas tribute card AS05, for a negative magnetic anomaly, lowest amplitude is -1111nT, and (nT is
Receive the abbreviation of tesla (nanoteslas), be a kind of unit in electromagnetic field) range of spatial abnormal feature is larger, and east northeast is not to sealing
It closes, westwards gradual pinching.East and West direction is about 11 kilometers, and north-south is about 7km, infers that the exception is the reflection of granite porphyry body.
It works through earth's surface, lead zinc-silver polymetallic ore body (M II, III ore bodies of M) is found that at the southwestern position of the exceptions area, and ore body is walked
It matches to local form abnormal at this.Figure is interpreted according to magnetic method to infer：The exception porphyry bulk area is big, buries depth, form
Stablize.
4, high-definition remote sensing feature
(1) high-resolution remote sensing image feature
Beat Gu Gongka originate in east northeast to the fracture of Narigongma ditch and the lattice dragon of northern west gush major rupture intersection part
North side.Middle acidity it is shallow at mineralized porphyry intrusive body be beat the most important governing factor in the mineral deposits Gu Gongka.Biotite granite porphyry is small
Stock, granite porphyry dike swarm or larger granite porphyry containing mine exist, and are most direct indicators for deposit, pass through remote Sensing Interpretation
Granite porphyry can be drawn a circle to approve.In addition to Narigongma mineral deposit, the Porphyry Type mineralization points of known critical, originate in the Permian Period mostly on region
In the mafic-intermediate volcanic rocks on stratum.Stronger and larger face type or face-line style are usually developed in mineralized porphyry body country rock
Alteration.Development has face type pyrite propylite alteration zone wide, in dirty-green, ground especially in mafic-intermediate volcanic rocks
Table forms bronzing rickle, is very obvious intuitive indirect indicator.It is charted by the spatial distribution of Alteration anomaly,
Important information can be provided to find the copper-molybdenum of Porphyry Type.
(2) the extraction of remote sensing Alteration anomaly and distribution
The whole scape ETM+ satellite datas of Alteration Information of Remote Sensing extraction and application are adopted using Crosta principal component analysis as main method
With " removing interference-principal component analysis-thresholding-techniques " (DPT), extraction is believed with the relevant alteration of hydroxyl hydrothermal alteration mineral
Breath-OH- remote sensing abnormals, and contain Fe3+The relevant iron of mineral contaminates remote sensing abnormal；Mask principal component point is done with the wave band of TM1,4,5,7
Analysis, with the dynamic range that several times σ (standard deviation) is exported as principal component, extraction and hydroxyl OH-Hydrothermal alteration mineral facies
The altering remote sensing information of pass；Mask principal component analysis is done with the wave band of TM1,3,4,5, is equally exported as principal component with several times σ
Dynamic range is extracted and contains Fe3+The relevant iron of mineral contaminate remote sensing abnormal principal component, finally obtain 1:100000 hydroxyls, iron dye are different
Normal distribution map.
Above-mentioned TM1 refers to 0.45-0.52um indigo plants wave band to chlorophyll and dim light of night element concentration sensitive, penetrates by force, uses to water body
In distinguish soil and vegetation, deciduous forest and coniferous forest, offshore waters are charted, help to differentiate the depth of water and the distribution of water Determination of Chlorophyll with
And whether there is wawter bloom etc. in water.TM4 refers to 0.76-0.96um near infrared bands：It is sensitive to disease-free plant near-infrared reflection, it is right
Green plants uneven class size is most sensitive, is the general wave band of plant, is investigated for pastor, and crop growing state measures, water area survey, biology
Fixed and waters is measured to differentiate.TM5 refers to infrared band in 1.55-1.75um：To the different reflection sensitives of plant water content and cloud,
Absorption bands in water, general 1.4-1.9um is interior to reflect water content, is used for soil moisture plant Water Content Investigation, and moisture is kind
Research, crop growing state analysis can determine whether water content and snow, cloud to improve the ability for distinguishing different role growing way.In TM7
In a band spectrum image, the terrestrial object information that general 5th wave band includes is most abundant.TM7 refers to 2.08-3.35um, in it is infrared
Wave band adds wave band for geologist, is in the strong absorption band of water, and water body is in black, can be used for distinguishing main rock type, rock
The heat etching degree of stone, detection clay mineral related with explanation rock.
Remote sensing abnormal covers more serious basement rock point mainly along construction line direction spread in vegetative coverage and debris flow in area
Cloth area spatial abnormal feature is discontinuously scattered, shows as small plaque-like or star spot shape more, and intensity, scale are relatively low；And it is in middle high mountainous region more
Band-like, planar spread, hydroxyl, iron dye are distributed, and intensity is higher, and center intensity is consistent with construction line extending direction, hydroxyl master
The Triassic period of being distributed in Bolila Formation angle rudstone, limestone and press from both sides limestone, the main distribution of iron dye with the big drawing group sandstone of first, mud stone
Volcanic rock section, clastic rock section are organized in 90 teams and groups' limestone of the Permian Period and Nuo Ba small day guarantors, the Carboniferous Period miscellaneous multigroup clastic rock section,
Carbonatite section.It is different by being contaminated with 1: 10 ten thousand miscellaneous more regional hydroxyls, iron 1: 1 ten thousand Narigongma area remote sensing geology mineral products interpretation figure
Normal profiling analysis obtains auriferous strata and remote sensing abnormal distribution, intensity and abnormal sleeving fastening degree relationship (table 1).
1. auriferous strata of table is distributed list with remote sensing abnormal
(3) Remote Sensing Exploration Prospective Prognosis
On the basis of 1: 10 ten thousand remote Sensing Interpretation and remote sensing anomalies extraction and comprehensive analysis, in conjunction with 1: 1 ten thousand remote Sensing Interpretation
Have mineral products achievement data in achievement, with area and Remote Sensing Exploration prospective area at 5 has tentatively been drawn a circle to approve by remote sensing Analysis of Metallogenetic Conditions.
The stratum of exposure is that small Middle Permian Nuo Ba, guarantor day organizes volcanic rock section (P in prospective area1-2nr2), intrusive rock mainly has Early Himalaya
Gu Gongka alteration granite porphyry bodies are beaten, the alterations such as rock silication and sericitization are strong.It is R01 remote sensing abnormals that number is distributed in area
Area, the anomaly intensity is high, and hydroxyl, Ferric contamination anomaly have I and II distribution, and have higher sleeving fastening degree, Porphyry Bodies exposure position
Ancient tribute card AS is beaten with knownFirst 3(Cu, Pb, Zn, Ag) spatial abnormal feature range is coincide, preferably to have the distant of apparent ore-prospecting meaning in area
One of sense exception.Thus, it is believed that the area is to find with the related Porphyry Copper of Early Himalaya intrusive rock, molybdenum ore production advantageously
Area.
5, trenching exposure and drilling project verification
Pass through 1：50000 remote sensing geologies interpret, it is determined that the image feature of each geologic body, to the distribution of each geologic body into
It has gone and has primarily determined, be extracted linear and ringed structure, preferably gone out to beat the mining areas the Gu Gongka remote sensing abnormal significantly greater as ore-prospecting meaning
Area.AS04, AS05 of 1: 5 ten thousand stream sediment survey delineation are abnormal, and Pb, Zn, Ag, Cu fitting are good, compared with Narigongma
(AS06) abnormal area bigger, intensity is high, and point band is apparent.According to 1:The abnormal morphology of 50000 high-precision magnetic surveies delineation, intensity
And residing geology position, beat the areas Gu Gongka-Na Ema high-precision magnetic survey and draw a circle to approve 9 magnetic anomalies altogether, it is abnormal easternmost
It is the relatively large magnetic anomaly of negative value, the east, which is born in the middle part of magnetic anomaly, small-scale positive magnetic anomaly, and the two of entire negative magnetic anomaly
Side is all that more in disorder positive magnetic anomaly has drawn a circle to approve four copper-lead zinc by earth's surface trenching engineering supervision beating Gu Gongka earth's surfaces
Mine (change) body, length 400-1180m, thickness 3.2-15.56m, copper average grade 0.32%；Lead average grade 0.46% and with
Zinc, Laoheshangmao.Metal deposits are Porphyry Type, and the area is analyzed according to geologic feature, Geophysical Anomalies, geochemical anomaly element combinations etc.
Denudation degree is more shallow than Narigongma.There is Porphyry Bodies appearance disclosed in these position deeps in conjunction with drilling project, and there are three copper
Lead-zinc vein (II ore bodies of M), the huge space with Search For Hidden porphyry copper mine.
The present invention by reconnoitring and looking for mine technical method to test in recent years, using Narigongma Cu-Mo deposit as emphasis research pair
As being found that a collection of Cu-polymetallic deposit point and mineralization points in its periphery and surrounding area, achieving the weight for finding Cu-polymetallic deposit
Quantum jump, and preferred many places target prospecting areas；It is good to show that geo-exploration technology combination has in Magmatic Cu molybdenum ore area
Prospecting result.
Place, those skilled in the art can not select from the prior art to the greatest extent in the embodiment of the present invention.
Disclosed above is only the specific implementation mode of the present invention, but scope of protection of the present invention is not limited thereto, is appointed
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with above-mentioned scope of the claims
It is accurate.
Claims (9)
1. a kind of Cenozoic Magmatic Cu Polymetallic Mineralization Belt method, which is characterized in that the described method comprises the following steps：
Mineralization system type is determined according to Magmatic mineral deposit and mine point output space-time characteristic and geology background, draws a circle to approve Magmatic
Location or geologic anomaly area or abnormal belt；
Carry out stream sediment survey in the Magmatic location or geologic anomaly area or abnormal belt, it is preliminary draw a circle to approve target prospecting area and
Classify to target area；
It selects Magmatic copper mine or Molybdenum Mineralization relatively strong in the target area is classified or abnormal preferable section carries out high-precision magnetic survey and tests
Card, determines the first preferred target area or the first exceptions area；
Using high-definition remote sensing extractive technique the described first preferred target area or the first exceptions area draw a circle to approve the second preferred target area or
Second exceptions area；
Described second preferred target area or the second exceptions area are carried out making an on-the-spot survey inspection, find out geologic anomaly area or abnormal belt or mineralising line
Rope area；
1 is carried out to the geologic anomaly area or abnormal belt or mineralising clue area:10000 soil profiles or petrochemistry profile survey,
Primarily determine earth's surface geology containing mine body position and mineralising body characteristics；
Superficial part exposure, recourse, control mineralized belt or mineralization body specific location, form and its feature are carried out using trenching；
Mineralization body deep grade, the situation of change of thickness, scale and occurrence are determined using drilling technique, finally found that metal ore
Or mineral deposit.
2. a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation as described in claim 1, which is characterized in that the copper is more
Metallic ore is to have the nonferrous metal ore of lead ore and zinc ore concurrently based on copper mine or molybdenum ore.
3. a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation as described in claim 1, which is characterized in that described at mine
System is Collisional orogenisis mineralization system.
4. a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation as claimed in claim 2, which is characterized in that described at mine
System is Magmatic copper mine or molybdenum ore subsystem；The subsystem delineation identifies Early Himalaya related with copper mine or Molybdenum Mineralization
The high potassium calc-alkaline granite porphyry of invasion；Centered on the entirety of the rock mass forms one by Narigongma in research area, it is in
Magmatic copper mine from NW-SE to output or Molybdenum Deposit Zone, from NW to SE successively exposure have beat Gu Gongka, Narigongma, Lu Ge and
The green Magmatic copper mine of henry match or molybdenum deposit point.
5. a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation as claimed in claim 2, which is characterized in that described preliminary
Delineation target prospecting area concrete operations be：The sampling density when stream sediment survey is controlled in 4-8 point/km2Within；
GeoExplor and Mapgis6.7 software development anomaly association figures are utilized to test data, and commented in identical host element class
Sequence then carries out anomaly classification according to off-note, geological conditions and ore-prospecting meaning；Calmodulin binding domain CaM geologic feature, previous materialization
It visits, the Geological Achievements of placer abnormal, tentatively draws a circle to approve target prospecting area, and carry out target area classification.
6. a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation as claimed in claim 2, which is characterized in that the remote sensing
Information source select IKONOS satellite datas and U.S. ETM+Data；Pass through high-precision remote Sensing Interpretation Magmatic copper mine or Molybdenum Mineralization
The mineral products correlation analysis such as geologic feature and lead, zinc is aided with hydroxyl, Ferric contamination anomaly and copper, Lead and Zinc resource spatial Correlation Analysis,
On the basis of comprehensive analysis hydrographic name, high-precision magnetic survey exception, high-precision remote Sensing Interpretation and remote sensing abnormal feature,
To predict copper mine or molybdenum mineral resources as direct purpose, synthesis draws a circle to approve out Magmatic copper mine or Molybdenum Mineralization area or exceptions area.
7. a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation as claimed in claim 2, which is characterized in that the geology
Exceptions area or abnormal belt or mineralising clue area carry out 1:The concrete operations of 10000 soil profiles or petrochemistry profile survey are：1:1
For the arrangement of ten thousand soil profiles basically perpendicular to formation strike and abnormal long axis direction, section starting point is fixed with the GPS after unified correction
Position, hatching use compass orientation, and pedotheque sampled point away from 20m, encrypt to 5m, sample collection by fractured alteration zone location
Substance in same medium, same layer position, sample collection away from earth's surface in soil C layers of the depths 30-50cm, really because covering thicker adopt
Collection, then in B layers of collected downhole, acquires the general 500-1000g of weight less than C layers, and weight is more than 200g after ensureing sample sieving；
1:10000 petrochemistry sections are laid should be fixed using compass perpendicular to the direction of strata, GPS positioning after section starting point corrects
To correcting using the front and back measurement average value for surveying hand for error；Sampled point is encrypted away from 10-20m, the enrichment of mineralization location to 10m
Below；Identification and analysis is carried out to complex lithology layer position and Mineralization Features acquisition light, sheet-like.
8. a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation as claimed in claim 2, which is characterized in that the utilization
Trenching carries out the specific operation process of superficial part exposure, recourse, control mineralized belt or mineralization body specific location, form and its feature：
Earth's surface geology containing mine body position and mineralization body are primarily determined using described, and the specific of trenching engineering is carried out on the basis of making an on-the-spot survey on the spot
Positioning is arranged in the mineralising location that cladding thickness is no more than 3m, perpendicular to target geological long axis of body direction, formation strike or total
Construct line direction arrangement；Slot bottom is wide to be not less than 0.5-0.8m, and depth is not more than 3m, discloses fresh matrix and reaches 0.3-0.5m,
Understand occurrence as principle can observe；Chemical sample slot is arranged in the joint of cell wall and slot bottom, is used in combination red paint on the spot by sample
Slot draws and marks sample number, is sampled using groove engraving, and sample slot specification is 10 × 3cm, and example weight error rate is not higher than 10%, adopts
Clean sampled point rock surface when sample, hang up properly cloth, ensure that sample is not contaminated and splashes mistakes, acquisition method strictly by specification into
Row, by same orientation, same inclination angle cloth specimen, each sample wants end to end；In addition to chemical sample, also rock-like is adopted by 2-5m spacing
Full slot control；It disclosed by trenching work, recourse, control mineralized belt, mineralization body, tentatively find out mineralising volume morphing, occurrence, rule
Mould draws a circle to approve earth's surface mineralization body.
9. a kind of Magmatic Cu Polymetallic Mineralization Belt method of new generation as claimed in claim 2, which is characterized in that the utilization
Drilling technique determines mineralization body deep grade, the situation of change of thickness, scale and occurrence, finds the concrete operations in ore body or mineral deposit
Process is：Using the earth's surface mineralization body of delineation, drilling deployment is carried out, specific boring positioning is joined in earth's surface the enrichment of mineralization location
It examines rock mass or attitude of stratum, landform is specifically positioned；Drilling project construction is straight hole, and construction method uses heavy caliber Directional Drilling
Into whole bore open is not less than 75mm；Ore body and its mine heart, rock core in roof and floor the 3-5m taking rate that is averaged are not less than 80%, thick
Continuous length of the mine heart taking rate less than 90% be no more than 5m inside gulf, and the layering of the country rock rock core taking rate that is averaged is not low
In 80%；The drilling method of sampling is split as two halves, basic point of half conduct along rock core long axis direction and mineralising uniformity
Analysis sample send measuring unit processing chemical examination, the other half is retained in case checking and research is used；In mineralization body up-sampling, cross-layer, sample be not long
1.5m, two side draw circle side sample of mineralization body, by drilling project primarily determine mineralization body deep grade, thickness, scale, occurrence change
Change situation, finds deep orebody or mineral deposit.
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