CN109709623A - Nondestructive Gold mineralization detection method - Google Patents
Nondestructive Gold mineralization detection method Download PDFInfo
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- CN109709623A CN109709623A CN201811242240.7A CN201811242240A CN109709623A CN 109709623 A CN109709623 A CN 109709623A CN 201811242240 A CN201811242240 A CN 201811242240A CN 109709623 A CN109709623 A CN 109709623A
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000010931 gold Substances 0.000 title claims abstract description 58
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 58
- 230000033558 biomineral tissue development Effects 0.000 title claims abstract description 48
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 230000004075 alteration Effects 0.000 claims abstract description 94
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 85
- 239000011707 mineral Substances 0.000 claims abstract description 85
- 238000004458 analytical method Methods 0.000 claims abstract description 42
- 238000009826 distribution Methods 0.000 claims abstract description 33
- 238000002329 infrared spectrum Methods 0.000 claims abstract description 30
- 230000008859 change Effects 0.000 claims abstract description 10
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims description 31
- 229910052627 muscovite Inorganic materials 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 13
- 229910001748 carbonate mineral Inorganic materials 0.000 claims description 11
- 238000001228 spectrum Methods 0.000 claims description 11
- 238000010183 spectrum analysis Methods 0.000 claims description 7
- 229910018512 Al—OH Inorganic materials 0.000 claims description 6
- 229910021532 Calcite Inorganic materials 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000012844 infrared spectroscopy analysis Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000012790 confirmation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000004611 spectroscopical analysis Methods 0.000 description 3
- -1 Erie Stone Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910052604 silicate mineral Inorganic materials 0.000 description 2
- 229910052600 sulfate mineral Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 229910001649 dickite Inorganic materials 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052903 pyrophyllite Inorganic materials 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical class [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
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Abstract
The present invention relates to nondestructive Gold mineralization detection methods comprising: first step obtains hydrothermal alteration zone Distribution Data by wide area geological prospecting；Second step divides hydrothermal alteration zone according to above-mentioned hydrothermal alteration zone Distribution Data in wide area geology；Third step selects hydrothermal alteration mineral in the above-mentioned hydrothermal alteration zone of division；Four steps takes geological samples, and the short infrared spectrum analysis data of hydrothermal solution altered mineral is accumulated using spectrometer；5th step is patterned absorbing wavelength position and change of gradient in above-mentioned short infrared spectrum analysis data, and determines altered mineral phase judgment criteria；And the 6th step, take geological samples again, using portable spectrometer compare hydrothermal alteration mineral short infrared Spectroscopic analysis results and above-mentioned altered mineral phase judgment criteria, to determine Gold mineralization area.
Description
Technical field
The present invention relates to can by hydrothermal alteration zone detection come confirm Gold mineralization as mineral resources detection
Nondestructive Gold mineralization detection method.
Background technique
In general, mineral resource exploration is applicable in difference according to the genetic type of different deposit types in terms of geology mineral deposit
The various exploration engineerings of change simultaneously execute comprehensive parsing, thus predict the high area of the preservation possibility of useful ore body.
In particular, the region of mineralized belt/precision exploration in, exhausting and make with the useful ore body for being exposed to adjacent ground surface
It is deepened to explore the covered depth of the useful ore body of object, and the importance of hydrothermal alteration zone exploration is more and more prominent.
As the hot water (hydrothermal water) released from underground magma (magma) rises, including have
It uses mineral precipitation and forms the hot water mineral deposit (hydrothermal deposits) as mineral deposit, the important feature in hot water mineral deposit
One of reacted on the periphery of useful ore body for previous rock and hydrothermal solution to form rock or mineral and the heat of alteration occurs
Liquid alteration zone (hydrothermally altered zone).
In particular, because Gold mineralization caused by hot water in addition to can output rusty gold, can also the so-called not visible gold of output, because
This attracts attention recently.
In previous hydrothermal alteration zone, mainly using X-ray diffraction analysis (X-ray diffraction analysis),
Micro- sem observation etc. needs the analysis method of preprocessing process to carry out the identification of altered mineral phase, however after entering generation nineteen ninety
Semiduation, as short wavelength infrared line analysis technology and analytical equipment are flourishing, actively execute mineral identification and various mineral deposits
The exploration of the alteration zone of type is studied.
Field Geology Investigations, drill core edit and record (drill core logging), take photo by plane and long range exploration system in, erosion
Visual (visible) for becoming mineral (alteration mineral) is red to near-infrared (near-infrared) and short wavelength
(short-wave infrared) ultraphotic spectrum (hyperspectral) characteristic is as detecting economically useful mining site outside
Indicant, alteration zone and make alteration zone map suitable for dividing.
However, not being disclosed for carrying out preparation property before the accurate exploration using above-mentioned indicant confirmation valuable mineral
Mineral deposit prospecting method.
Existing literature related to this, which has in Korean granted patent the 1527945th (day for announcing: 2015.06.10), to be disclosed
Clay mineral detection device and utilize its clay mineral detection method.
Existing technical literature
Patent document
Korean granted patent the 1527945th (day for announcing: 2015.06.10)
Summary of the invention
Therefore, the present invention provides nondestructive Gold mineralization detection method, in order to confirm as Gold mineralization
Evidence hydrothermal alteration zone, in the division by the sectionalization of the geological prospecting based on region, pass through portable spectrometer product
Tired short infrared spectrum analysis data, with predicting Gold mineralization in advance by above-mentioned short infrared spectrum analysis data
The investment for time, manpower and capital needed for detecting gold mine is greatly decreased in area, realizes efficient.
The technical problem to be solved in the present invention is not limited to technical problem mentioned above, those of ordinary skill in the art
Unmentioned other technologies problem can be expressly understood that by following record.
In order to solve the above technical problem, the present invention provides nondestructive Gold mineralization detection methods comprising: the
One step obtains hydrothermal alteration zone Distribution Data by wide area geological prospecting；Second step, in wide area geology according to above-mentioned hydrothermal solution
Alteration zone Distribution Data divides hydrothermal alteration zone；Third step selects hydrothermal alteration mineral in the above-mentioned hydrothermal alteration zone of division；
Four steps takes geological samples, and the short infrared spectrum analysis data of hydrothermal solution altered mineral is accumulated using spectrometer；The
Five steps are patterned absorbing wavelength position and change of gradient in above-mentioned short infrared spectrum analysis data, and
Determine altered mineral phase judgment criteria；And the 6th step, geological samples are taken again, compare hydrothermal solution using portable spectrometer
The short infrared Spectroscopic analysis results of altered mineral and above-mentioned altered mineral phase judgment criteria, come with determining Gold mineralization
Area.
Also, above-mentioned wide area geological prospecting can obtain hydrothermal solution by Landsat (LANDSAT) or aerial photograph analysis
Alteration zone Distribution Data.
Also, above-mentioned hydrothermal alteration zone is obtained using band ratio (band ratio) long range exploration data processing technique
Distribution Data.
Also, in the step of selecting above-mentioned hydrothermal alteration mineral, it can select referring to mineral assemblage group and above-mentioned referring to mine
Object group selects hydrothermal alteration mineral by the analysis of spectrophotometric spectra in being combined.
Also, above-mentioned referring to mineral assemblage group can be to include in the carbonate mineral of calcite, muscovite and aragonite
More than one.
Also, above-mentioned hydrothermal alteration mineral can be muscovite.
Also, above-mentioned muscovite, can be based on Al-OH in conjunction with vibration and in 2200nm in short infrared spectrum analysis
With specific absorption peak.
Also, above-mentioned specificity absorption peak can be by based on the absorbing wavelength position of short infrared spectrum analysis and ladder
The variation of degree and determine.
Also, in the step of above-mentioned spectrometer accumulation short infrared spectrum analysis data, using portable light
Spectrometer accumulates infrared spectrum analysis data in sampling location.
Also, after obtaining hydrothermal alteration zone Distribution Data by above-mentioned wide area geological prospecting, it may also include that using can
The unmanned plane for obtaining super spectrum image carrys out the division to above-mentioned hydrothermal alteration zone and carries out sectionalization.
According to the present invention, the distribution of hydrothermal alteration zone is confirmed by wide area geological prospecting and hydrothermal alteration zone is carried out again
The division of sectionalization accumulates short infrared spectrum analysis money according to above-mentioned division and by short infrared spectrum analysis
Material compared with the exploitation method explored by earth's surface, more effectively predicts Gold mineralization area by this process.
In particular, having high-quality based on gathering around the muscovite at the center for the hot water class for detecting composition hydrothermal alteration zone
Gold selects above-mentioned muscovite as index mineral in spectroscopy-hydrothermal alteration mineral, using portable spectrometer to sectionalization
The sample taken in division is analyzed, and is confirmed immediately at mineral prospecting scene and is determined whether with continuing to carry out Gold mineralization
The exploration in area.
Also, the short infrared Spectroscopic analysis results of muscovite are accumulated to form database, with the light of above-mentioned data
The more accumulation of spectrum analysis result, there are the detection accuracies of the altered mineral phase of muscovite more to increase, and carries out mineral to have
Exploration during the prediction in Gold mineralization area become more and more accurate advantage.
Also, it is directed to taken sample, not instead of using chemically or physically analyzing, is passed through in predetermined distance portable
Spectrometer carries out short infrared spectrum analysis to carry out exploration process, therefore effectively detects gold not destroy the state of sample
Mineralization.
Detailed description of the invention
Fig. 1 is the flow chart for showing the sequence of nondestructive Gold mineralization detection method of the embodiment of the present invention.
Fig. 2 is the absorption peak of muscovite in the nondestructive Gold mineralization detection method for show the embodiment of the present invention
Short wavelength infrared linear light spectrogram.
Specific embodiment
Hereinafter, referring to attached drawing, to a preferred embodiment of the present invention will be described in detail.
Advantages of the present invention, feature and realization can be expressly understood that by referring to the embodiment being described in detail later together with attached drawing
The method of these advantages and features.
But the invention is not limited to embodiments as disclosed below, but mutually different various modes can be passed through
Realize, the present embodiment is used only for completely disclosing the present invention, and so that the technical field of the invention ordinary skill people
Member is fully understood by for the purpose of scope of the invention to provide, and the present invention is defined according only to claimed range is invented.
Also, during illustrating the present invention, it is being judged as that related known technology etc. is possible to obscure present subject matter
In the case where, detailed description related to this will be omitted.
Fig. 1 is the flow chart for showing the sequence of nondestructive Gold mineralization detection method of the embodiment of the present invention.
Referring to Fig.1, nondestructive Gold mineralization detection method includes: first step, is obtained by wide area geological prospecting
Take hydrothermal alteration zone Distribution Data；Second step divides hydrothermal solution erosion according to above-mentioned hydrothermal alteration zone Distribution Data in wide area geology
Variable speed；Third step selects hydrothermal alteration mineral in the above-mentioned hydrothermal alteration zone of division；Four steps takes geological samples, benefit
The short infrared spectrum analysis data of hydrothermal solution altered mineral is accumulated with spectrometer；5th step, in above-mentioned short infrared
In spectrum analysis data, absorbing wavelength position and change of gradient are patterned, and determine altered mineral phase judgment criteria；
And the 6th step, geological samples are taken again, and the short-wave infrared linear light of hydrothermal alteration mineral is compared using portable spectrometer
Spectrum analysis result and above-mentioned altered mineral phase judgment criteria, to determine Gold mineralization area.
Firstly, obtaining hydrothermal alteration zone Distribution Data (S100) by wide area geological prospecting.
Above-mentioned hydrothermal alteration zone is typically can include: silicate mineral, including kaolinite, dickite, pyrophyllite, Erie
Stone, chlorite, hornblend, smectite, mica group etc.；Sulfate mineral, including gypsum, alunite class etc.；And carbonate mine
Object, including calcite, muscovite etc..
The substantially distribution of above-mentioned wide area geological prospecting confirmation hydrothermal alteration zone, is accumulated by executing repeatedly as data
Library.
Above-mentioned wide area geological prospecting can obtain hydrothermal alteration zone by Landsat (LANDSAT) or aerial photograph analysis
Distribution Data.
Above-mentioned Landsat is land observation satellite, provides the spectrum of the wavelength of near infrared ray band and visible rays band.
Hydrothermal alteration zone (S200) is divided according to above-mentioned hydrothermal alteration zone Distribution Data in wide area geology.
It can be by satellite or aerial photograph by obtaining for the hydrothermal alteration zone Distribution Data of above-mentioned wide area geological prospecting
Data processing technique calculates.
Based on the data processing of above-mentioned satellite or aerial photograph come in a manner of the position accuracy for improving hydrothermal alteration zone
Export.
In the case where confirming hydrothermal alteration zone based on above-mentioned data processing, using the Landsat obtained or take photo by plane
Photo, therefore the efficiency of nondestructive Gold mineralization detection can be improved.
Above-mentioned hydrothermal alteration zone Distribution Data can pass through band ratio (band ratio) long range exploration data processing technique
To obtain.
In the spectrum of Landsat photo, the wave of band 7 of the band 5 than 2000nm to 2400nm of 1500nm to 1800nm is emphasized
It can specific include calcite (calcite), muscovite (muscovite) in the distribution of hydrothermal alteration zone in the case where section ratio
Carbonate mineral hydrothermal alteration zone distribution.
Based on above-mentioned data processing technique, the hydrothermal alteration zone that can be made of carbonate mineral in specific hydrothermal alteration zone
Distribution is to be divided.
Confirm the distribution of above-mentioned hydrothermal alteration zone come to being finely divided of hydrothermal alteration zone divide in the case where, gold can be improved
The detection efficient of mineralization.
Hydrothermal alteration mineral (S300) is selected in the above-mentioned hydrothermal alteration zone of division.
Wherein, it in the step of selecting above-mentioned hydrothermal alteration mineral, selectes referring to mineral assemblage group and above-mentioned referring to mineral
Group selects hydrothermal alteration mineral by the analysis of spectrophotometric spectra in being combined.
Above-mentioned hydrothermal alteration mineral may include silicate mineral, sulfate mineral or carbonate mineral, obtain above-mentioned heat
In the step of liquid alteration zone Distribution Data, the distribution for carbonate mineral may be selected as data.
Therefore, it is above-mentioned referring to mineral assemblage group be include in the carbonate mineral of calcite, muscovite and aragonite one
Kind or more.
According to above-mentioned hydrothermal alteration zone Distribution Data, confirmation mainly includes the hydrothermal alteration zone of carbonate mineral, vast
Area prediction Gold mineralization, that is, can be improved the detection possibility of Gold mineralization.
It later, can be above-mentioned referring to selecting hydrothermal alteration mineral by spectroscopic analysis in mineral assemblage group.
Since the particle or crystallinity of most above-mentioned hydrothermal alteration mineral are poor, and it is difficult to identify mine using microscope
Object.
Since the infrared spectrum analysis method for being easy to measure at the scene is highly effective, it is therefore preferred to referring to mineral assemblage group
It is middle to select to distinguish the muscovite of feature in spectroscopy using portable short infrared spectrometer as hydrothermal alteration mine
Object.
Above-mentioned muscovite (white mica) extensively preservation in hydrothermal alteration zone, can according to a distance from useful ore body come table
Show the variation in mineral composition.
In particular, 5~the 7km on the periphery of muscovite confirms the distribution of the useful ore body such as gold mine.
Therefore, above-mentioned hydrothermal alteration mineral are muscovite.
Above-mentioned muscovite having specifically in 2200nm in conjunction with vibration based on Al-OH in short infrared spectrum analysis
Property absorption peak.
Above-mentioned muscovite is become based on the specific absorption peak in 2200nm that the combination of Al-OH is vibrated can confirm hydrothermal solution
Indicant in the spectroscopy of altered mineral.
Geological samples are taken, the short infrared spectrum analysis data of hydrothermal solution altered mineral is accumulated using spectrometer
(S400)。
Take that the movement of spectrum analysis data is executable repeatedly to accumulate to obtain by geological samples.
The movement of spectrum analysis data is obtained by taking for above-mentioned geological samples, is improved and aftermentioned is utilized portable light
Spectrometer compares the short infrared Spectroscopic analysis results of hydrothermal alteration mineral and the accuracy of altered mineral phase judgment criteria, because
This multiple place preferably in the hydrothermal alteration zone of division executes.
In above-mentioned short infrared spectrum analysis data, absorbing wavelength position and change of gradient are patterned,
And determine altered mineral phase judgment criteria (S500).
In order to determine above-mentioned altered mineral phase judgment criteria, select muscovite as hydrothermal alteration mineral.
It can confirm according to the variation of the absorbing wavelength position of short infrared spectrum analysis and gradient and determine above-mentioned spy
Anisotropic absorption peak.
In the step of accumulating short infrared spectrum analysis data using above-mentioned portable spectrometer, portable light is utilized
Spectrometer to accumulate infrared spectrum analysis data at sampling scene.
Using above-mentioned portable spectrometer come stockpile in the case where, can decide whether immediately at the scene continue non-demolition
Property Gold mineralization detection, be the nondestructive method for not carrying out physics, chemical analysis to sample, therefore have very much
Benefit.
Fig. 2 is the absorption peak of muscovite in the nondestructive Gold mineralization detection method for show the embodiment of the present invention
Short wavelength infrared linear light spectrogram.
Referring to Fig. 2, the specific absorption peak of the 2200nm of the combination vibration of the Al-OH based on above-mentioned muscovite can be confirmed
Position and gradient.
The position of above-mentioned specificity absorption peak and gradient, can be according to sample using portable spectrometer
Surface state, moisture is containing having ready conditions to change.
Therefore, absorbing wavelength position and change of gradient are patterned to determine above-mentioned altered mineral phase judgment criteria
In the case where, it can also effectively be predicted in hydrothermal alteration zone according to above-mentioned judgment criteria even if using portable spectrometer
With the presence or absence of the muscovite as hydrothermal alteration mineral.
Select muscovite will by the distinctive short wavelength infrared linear light spectrum analysis of muscovite as Gold Mineralization index mineral
Absorbing wavelength position and change of gradient take geological samples as judgment criteria again, and are obtained using portable spectrometer
Take the short infrared Spectroscopic analysis results of hydrothermal alteration mineral.
The short wavelength infrared line analysis of more above-mentioned judgment criteria and sample is as a result, predict that hydrothermal solution is lost according to judgment criteria
The presence for becoming mineral, determines preservation hydrothermal alteration mineral in the survey area or the division of nondestructive Gold mineralization
And stop the locator of nondestructive Gold mineralization.
On the other hand, it after obtaining hydrothermal alteration zone Distribution Data (S100) by above-mentioned wide area geological prospecting, can also wrap
It includes and obtains the step of unmanned plane of super spectrum image carries out sectionalization come the division to above-mentioned hydrothermal alteration zone using section.
By obtain super spectrum image can also according to the type of thermal water minerals differentiation hydrothermal alteration zone, using unmanned plane come pair
It divides in the case where carrying out sectionalization, it is short compared with the case where dividing hydrothermal alteration zone according to the Distribution Data of hydrothermal alteration zone
Wave infrared spectrum analysis object greatly reduces and can be improved the whole efficiency of nondestructive Gold mineralization detection method.
Hereinafter, propose preferred embodiment to facilitate the understanding of the present invention, but following embodiment is only to illustrate the present invention,
The scope of the invention is not limited to following embodiments.
<embodiment 1>
Obtain thematic mapper (TM) shadow of the Landsat in Australian sunrise dam (Sunrise Dam) gold mine area
Picture, and carry out data working process.
It emphasizes band ratio 5/7, confirms the area for the absorption peak for having 2000nm to the region 2400nm, confirm main packet
The hydrothermal alteration for including carbonate mineral, which is brought, to be divided,
Ensure the sample that drills in the hydrothermal alteration zone of division, and utilizes portable spectrometer (TeraSpec Halo
Mineral identifier) it confirmed short infrared spectrum analysis data.
By 10 times be repeatedly measured and confirm 2190~2200nm have absorption peak, and confirm be based on muscovite
Al-OH combine 2000nm nearby wavelength specificity position and change of gradient, thereby determine that altered mineral mutually judges to mark
It is quasi-.
Compared with the analysis result of the sample of mine surrounding area, the sample in gold mine area is absorbed with significant 2000nm
Peak value is judged as and meets altered mineral phase judgment criteria, is predicted as being Gold mineralization area.
Nondestructive Gold mineralization detection method of the invention is based on moonlet or aerial photograph obtains hydrothermal solution erosion
The Distribution Data of variable speed, and the hydrothermal alteration zone being mainly made of carbonate mineral is divided, to improve the spy of Gold mineralization
The accuracy and efficiency of survey process, later, based in carbonate mineral muscovite periphery may detect as useful ore body
Gold mine probability it is very high, as confirming the existing method of muscovite, be determined as short infrared spectrum analysis
As a result specific absorption peak is as the altered mineral phase judgment criteria that can confirm muscovite.
It therefore,, can compared with altered mineral phase judgment criteria when continuously performing the detection of nondestructive Gold mineralization
Judge whether the detection of persistently nondestructive Gold mineralization rapidly.
Also, based on the hydrothermal alteration zone Distribution Data as the database accumulated in advance, can be applicable at the scene as non-
The short wavelength infrared line analysis of destructive measuring method is come whether detecting Gold mineralization, therefore mineral detection accuracy can
It is compared with the past to greatly improve, whether determining that detection continues at the scene, suitable for confirming that it is pre- that the formal mineral deposit of gold mine detects
Standby process.
Also, the present invention is to reduce the method that detection divides according to step, can reduce and be turned into for nondestructive gold mine
With the manpower of detection, expense and the consumption of time.
More than, to the specific reality of the film roll core and its manufacturing method for preventing difference in height by fine etching of the invention
Apply example to be illustrated, but various implementations deformation can be carried out in the limit for not departing from the scope of the present invention, this be it is aobvious and
It is clear to.
Therefore, the scope of the present invention should not be limited to embodiment described, and should require to protect according to invention above-mentioned
Range and equivalent technical solutions are protected to determine.
It, it should be understood that embodiment above-mentioned is all illustrative in all respects, and is not restrictive, this hair
Bright range is claimed range by invention above-mentioned rather than is described in detail to indicate, range is claimed from inventing
Meaning, the derived form for having altered or deforming of range and its equivalents should be construed as included in the scope of the present invention it
It is interior.
Claims (10)
1. a kind of nondestructive Gold mineralization detection method characterized by comprising
First step obtains hydrothermal alteration zone Distribution Data by wide area geological prospecting；
Second step divides hydrothermal alteration zone according to above-mentioned hydrothermal alteration zone Distribution Data in wide area geology；
Third step selects hydrothermal alteration mineral in the above-mentioned hydrothermal alteration zone divided；
Four steps takes geological samples, and the short infrared spectrum analysis money of hydrothermal solution altered mineral is accumulated using spectrometer
Material；
5th step carries out figure to absorbing wavelength position and change of gradient in above-mentioned short infrared spectrum analysis data
Shape, and determine altered mineral phase judgment criteria；And
6th step, takes geological samples again, and the short-wave infrared linear light of hydrothermal alteration mineral is compared using portable spectrometer
Spectrum analysis result and above-mentioned altered mineral phase judgment criteria, to determine Gold mineralization area.
2. nondestructive Gold mineralization detection method according to claim 1, which is characterized in that above-mentioned wide area geology
Exploration obtains hydrothermal alteration zone Distribution Data by Landsat or aerial photograph analysis.
3. nondestructive Gold mineralization detection method according to claim 2, which is characterized in that utilize band ratio
Long range exploration data processing technique obtains above-mentioned hydrothermal alteration zone Distribution Data.
4. nondestructive Gold mineralization detection method according to claim 1, which is characterized in that select above-mentioned hydrothermal solution
In the step of altered mineral, reference mineral assemblage group is selected and in above-mentioned reference mineral assemblage group by the analysis of spectrophotometric spectra
To select hydrothermal alteration mineral.
5. nondestructive Gold mineralization detection method according to claim 4, which is characterized in that above-mentioned referring to mineral
It is one or more of the carbonate mineral for including calcite, muscovite and aragonite that group, which is combined,.
6. nondestructive Gold mineralization detection method according to claim 1, which is characterized in that above-mentioned hydrothermal alteration
Mineral are muscovite.
7. nondestructive Gold mineralization detection method according to claim 6, which is characterized in that above-mentioned muscovite exists
In short infrared spectrum analysis, specific absorption peak is had in 2200nm in conjunction with vibration based on Al-OH.
8. nondestructive Gold mineralization detection method according to claim 7, which is characterized in that above-mentioned specificity is inhaled
Peak value is received to be determined by the variation of absorbing wavelength position and gradient based on short infrared spectrum analysis.
9. nondestructive Gold mineralization detection method according to claim 1, which is characterized in that utilize above-mentioned spectrum
Instrument accumulated in the step of short infrared spectrum analysis data, accumulated infrared spectrum in sampling location using portable spectrometer
Analysis of data.
10. nondestructive Gold mineralization detection method according to claim 1, which is characterized in that by above-mentioned wide
It further include using the unmanned plane of super spectrum image can be obtained come to upper after domain geological prospecting obtains hydrothermal alteration zone Distribution Data
The step of stating the division progress sectionalization of hydrothermal alteration zone.
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| CN110658181A (en) * | 2019-10-24 | 2020-01-07 | 成都理工大学 | Method for identifying hot liquid alteration zone of Jiaodong gold deposit by using mineral Raman parameters |
| CN115586155A (en) * | 2022-09-29 | 2023-01-10 | 中国科学院广州地球化学研究所 | Method for rapidly delineating vein-like gold deposit ore body and obtaining indication mark index thereof |
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| KR101527945B1 (en) | 2014-11-27 | 2015-06-10 | 한국지질자원연구원 | Apparatus for detecting clay mineral and method for detecting clay mineral using thereof |
| KR101756380B1 (en) * | 2017-03-06 | 2017-07-10 | 한국지질자원연구원 | Detection methods of porphyry copper deposits using malachite hyperspectral imagery |
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| CN110658181A (en) * | 2019-10-24 | 2020-01-07 | 成都理工大学 | Method for identifying hot liquid alteration zone of Jiaodong gold deposit by using mineral Raman parameters |
| CN115586155A (en) * | 2022-09-29 | 2023-01-10 | 中国科学院广州地球化学研究所 | Method for rapidly delineating vein-like gold deposit ore body and obtaining indication mark index thereof |
| CN115586155B (en) * | 2022-09-29 | 2023-09-01 | 中国科学院广州地球化学研究所 | Rapid delineating vein-like gold ore deposit ore body and method for obtaining indication mark index thereof |
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