CN116699702A - Method for investigating hot water jet deposition type cobalt ore - Google Patents
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- 229910017052 cobalt Inorganic materials 0.000 title claims abstract description 60
- 239000010941 cobalt Substances 0.000 title claims abstract description 60
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001540 jet deposition Methods 0.000 title claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 40
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 21
- 239000011707 mineral Substances 0.000 claims abstract description 21
- 230000002159 abnormal effect Effects 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 16
- 238000005553 drilling Methods 0.000 claims abstract description 15
- 238000009826 distribution Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000013049 sediment Substances 0.000 claims abstract description 12
- 238000011835 investigation Methods 0.000 claims abstract description 11
- 238000012795 verification Methods 0.000 claims abstract description 11
- 230000005284 excitation Effects 0.000 claims abstract description 10
- 230000004807 localization Effects 0.000 claims abstract description 8
- 230000002349 favourable effect Effects 0.000 claims abstract description 5
- 230000010287 polarization Effects 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 9
- SFOSJWNBROHOFJ-UHFFFAOYSA-N cobalt gold Chemical compound [Co].[Au] SFOSJWNBROHOFJ-UHFFFAOYSA-N 0.000 claims description 7
- RYTYSMSQNNBZDP-UHFFFAOYSA-N cobalt copper Chemical compound [Co].[Cu] RYTYSMSQNNBZDP-UHFFFAOYSA-N 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 claims description 3
- -1 cobalt-iron-lead-zinc Chemical compound 0.000 claims description 2
- 238000011161 development Methods 0.000 claims description 2
- 238000004904 shortening Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract 1
- 238000005755 formation reaction Methods 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 241000282836 Camelus dromedarius Species 0.000 description 11
- 230000005856 abnormality Effects 0.000 description 11
- 239000010453 quartz Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 230000033558 biomineral tissue development Effects 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000010931 gold Substances 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 239000011028 pyrite Substances 0.000 description 4
- 229910052683 pyrite Inorganic materials 0.000 description 4
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910052665 sodalite Inorganic materials 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- QVYYOKWPCQYKEY-UHFFFAOYSA-N [Fe].[Co] Chemical compound [Fe].[Co] QVYYOKWPCQYKEY-UHFFFAOYSA-N 0.000 description 2
- ZGDWHDKHJKZZIQ-UHFFFAOYSA-N cobalt nickel Chemical compound [Co].[Ni].[Ni].[Ni] ZGDWHDKHJKZZIQ-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 101100139835 Homo sapiens RAC1 gene Proteins 0.000 description 1
- 102100022122 Ras-related C3 botulinum toxin substrate 1 Human genes 0.000 description 1
- 241000923606 Schistes Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- YIDNHDZOSVRLHK-UHFFFAOYSA-N cobalt copper gold Chemical compound [Co].[Cu].[Au] YIDNHDZOSVRLHK-UHFFFAOYSA-N 0.000 description 1
- FQMNUIZEFUVPNU-UHFFFAOYSA-N cobalt iron Chemical compound [Fe].[Co].[Co] FQMNUIZEFUVPNU-UHFFFAOYSA-N 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010423 industrial mineral Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011022 opal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
-
- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
- G01V3/26—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A90/30—Assessment of water resources
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Abstract
The invention discloses a method for exploring hot water jet deposition type cobalt ores, which comprises the following steps: step one: compiling a hot water sedimentary rock stratum distribution map, and primarily determining a favorable ore formation area; step two: according to the water system sediment measurement results, a cobalt element abnormal graph is compiled, a target area comprehensive prediction graph is compiled in combination with a stratum distribution graph, and the water system sediment measurement results are utilized to conduct optimization on the target area; step three: developing a special investigation, establishing a mark layer, and then preliminarily verifying a target area by utilizing an excitation profile and/or a localization profile to outline an ore body; step four: and (3) carrying out deep verification by utilizing drilling, simultaneously determining a deep mineral layer by utilizing borehole electrical logging, comprehensively analyzing the change rule of the stratum and the mineral layer by utilizing the contrast of lithology and rock layer thickness among different boreholes, and comprehensively evaluating cobalt ores in an exhibition area. The method has the characteristics of quickly identifying the cobalt-containing layer, providing an implementation basis for the slot exploration and drilling deployment, effectively improving the exploration efficiency and shortening the exploration period.
Description
Technical Field
The invention relates to the technical field of prospecting, in particular to a method for prospecting hot water jet deposition type cobalt ore.
Background
The submarine hot water jet deposition type deposit is one of the most important deposit types for producing metals such as copper, cobalt, lead, zinc, gold, silver and the like and sulfur in the world at present, and the research of the deposit type deposit has important theoretical significance and important practical value in the aspect of guiding prospecting.
Cobalt is very low in crust and generally does not form independent cobalt deposits, cobalt as a relatively dispersed element can occur in a variety of sulfide deposits, and accompanying cobalt ore bodies can occur in cobalt nickel deposits, copper ores, and iron ores. Cobalt has been developed and utilized at present mainly from associated components of deposits of copper, nickel, lead zinc, iron and the like. The cobalt-nickel ore deposit is mainly a magma ore deposit, and the hot water jet deposition type cobalt ore deposit is mainly associated minerals of ore deposits such as copper, lead zinc, iron and the like. Because of the complexity of the ore-forming action, the characteristics and signs of the hot water jet deposition type cobalt ore deposit are not clear, the required technical method is not uniform, and the prediction of the type of cobalt ore by a single exploration method is very limited. If the prospecting is carried out according to the conventional prospecting method, the prospecting period can be prolonged, the prospecting efficiency is low, the prospecting effect is not obvious, and the like.
Disclosure of Invention
The invention provides a method for exploring hot water jet deposition type cobalt ore by analyzing submarine jet-deposition ore forming characteristics and ore forming construction environments and schematically providing future ore finding directions and ore finding marks by using prediction theory such as similarity analogy, geological abnormality, ore deposit cause mode or ore forming system.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the method for exploring the hot water jet deposition type cobalt ore comprises the following steps:
step one: the hot water jet deposition is often accompanied with the distribution of hot water sedimentary rocks, the formation distribution map of the hot water sedimentary rocks is compiled by collecting area data, and the favorable ore formation area of the hot water jet deposition type cobalt ore is determined at first;
step two: cobalt is widely distributed on earth, but crust abundance is only 20×10 -6 . The cobalt element has iron affinity and sulfur affinity, the geochemical behavior is very similar to that of iron and nickel, and the cobalt element is produced by accompanying elements in the ore deposit, so that the cobalt ore deposit mainly containing independent cobalt minerals is rarely formed. It is counted that the eastern Kunlun ore-forming belt hot water jet deposition type cobalt ore can be classified into copper-cobalt, iron-cobalt and cobalt-gold combination types according to the ore-forming type of the substance combination cobalt. According to the measurement results of 1:50 ten thousand or 1:20 ten thousand water system sediments, a cobalt element anomaly map is compiled, a hot water sediments stratum distribution map is combined, a target area comprehensive prediction map is compiled, anomalies are further decomposed by using the measurement results of 1:5 ten thousand or 1:2.5 ten thousand water system sediments, and the target area is optimized;
step three: the jet flow sedimentary rock system is a jet flow basin sediment effect product, the sediment products in the jet flow sedimentary process are jet flow sedimentary rock and sulfide layers, various primary metal sulfide ores can cause low-resistance high-polarization abnormality, special investigation in a target area is carried out on the basis of the second step, a mark layer is established by using a 1:1 geological special map, and then preliminary verification is carried out on the target area by using an induced electrical profile and/or a localization profile, so that ore bodies are defined;
step four: and (3) carrying out deep verification by drilling on the basis of the step (III), simultaneously determining a deep mineral layer by using borehole electrical logging, and dividing different stratum interfaces in more detail by using borehole logging data to find and define the mineral (chemical) layer. By utilizing the contrast of lithology and rock stratum thickness among different boreholes, the change rule of the stratum and the mineral bearing layer in the whole area is comprehensively analyzed, the comprehensive evaluation of cobalt ore in the development area is performed, and the characteristics of the quantity, shape, scale, occurrence, grade change and the like of the surface ore body and mineralized body are determined in detail.
Preferably, step one collects a 1:5 geological map of the area and/or a 1:25 geological map, and if necessary compiles a hot water sedimentary rock formation map in conjunction with a field route geological survey.
Preferably, the cobalt element anomaly map in the second step includes a cobalt-gold element combination anomaly map, a cobalt-iron-lead-zinc element combination anomaly map, and a cobalt-copper element combination anomaly map.
Preferably, in the third step, an ore body is defined in an excitation abnormal region with low resistance and high polarization characteristics in the excitation profile result; the section of the localization section Co element higher than the background value of the whole section is used as an abnormal section to define ore bodies; the scale of the excitation profile and/or the ground profile is 1:2000 or 1:5000.
Preferably, in the third step, ore bodies are defined by taking the visual polarization ratio of 6.97-17.24% as a standard in the result of the laser section.
Preferably, in the fourth step, chemical samples are adopted in the drilling engineering, the Co element values are analyzed, and the boundary grade which is more than 0.02% is defined as ore body.
Preferably, in the fourth step, according to the natural potential curve obtained by drilling logging, no obvious difference exists on various rock-ore layers, and obvious low-resistance high-polarization abnormality exists on the known ore (chemical) layer to carry out ore body verification.
The beneficial effects of the invention are as follows:
the invention discloses a prediction and investigation method of hot water jet deposition type cobalt ore in mountain areas, wherein cobalt is produced by associated metal in nature, and an independent or mainly cobalt industrial mineral deposit is less formed, and cobalt used in the industry is mainly a byproduct recovered during processing of minerals such as copper, nickel, iron and the like. According to the invention, cobalt is used as a main mineral species to conduct prediction and investigation, a hot water sedimentary rock is identified, a prospecting area is defined by means of physical prospecting and the like, deep characteristics of a mineral body are revealed through drilling, a deep mineral indication information mark is used as a basis, and a drilling logging technology is used to complete prediction and investigation of a hot water jet sedimentary cobalt mineral deep positioning mineral resource. The method has the characteristics of quickly identifying the cobalt-containing layer, providing an implementation basis for the slot exploration and drilling deployment, effectively improving the exploration efficiency and shortening the exploration period.
Drawings
FIG. 1 is a flow chart of a hot water jet deposition type cobalt mine prediction investigation;
FIG. 2 is a graph of a water-bearing sedimentary rock formation in the middle east Kunlun region;
FIG. 3 is a graph of a prediction of cobalt ore formation in the middle east Kunlun region;
FIG. 4 is a graph showing the analysis of the comprehensive abnormality of camel road ditch AS 03;
FIG. 5 is a 1:1 geological map of camel road ditch area;
FIG. 6 is a comprehensive cross-sectional view of the chemical exploration in camel road ditch areas;
FIG. 7 is a cross-sectional view of an exploration line of camel road trench area 116;
fig. 8 is a log graph.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the invention, according to the abnormal sections taking copper cobalt, iron cobalt and cobalt gold as main elements and having better reproducibility in the sediment measurement results of 1:50 ten thousand, 1:5 ten thousand and 1:2.5 ten thousand water systems, the disclosure verification is carried out by using a 1:5000 or 1:2000 large scale localization section and excitation section and a 1:1 ten thousand special geological map filling result in the arrangement groove detection of the mining favorable section, and a mineralized body or ore body is defined; and verifying by using the drilling holes, and particularly circling the ore body. The deep mine (formation) horizon is accurately determined using drilling logging techniques. FIG. 1 is a flow chart of the hot water jet deposition type cobalt mine prediction investigation of the present invention.
Example 1
Taking the camel road ditch cobalt-gold ore of the Dongkunlun mountain area as an example, the method for rapidly delineating the target area for cobalt ore exploration is briefly described as follows:
(1) Collecting area data to compile stratum distribution diagram of hot water sedimentary rock, and initially determining favorable ore formation area of hot water jet sedimentary cobalt ore
There are three main causative types of hot water sedimentary rock: hot water deposition associated with continental hot system spas or thermal storage activities; hot water sedimentary rock produced in sedimentary rock systems, associated with regional geothermal anomalies, and volcanic activity; hot water sedimentary rock produced in volcanic-sedimentary rock systems. Hot water sedimentary rock is primarily thought to be involved in volcanic activity from current east Kunlun mountain area cobalt mine mineralization practices. The distribution of the eastern kunlun mineralogical zone in the green sea in relation to volcanic activity of the hot water sedimentary rock formations ranges from old to new: jin Shuikou rock mass, nano-erythro mass, mo Baogou mass, qi Manda lattice mass, ha Laguo lux group.
The main exposed stratum in the camel road ditch cobalt-gold mining area is an Ore-series sodium red platform group Ha Laba according to the ditch group, a former person identifies a set of quartz sodium long rocks in the set of stratum, the quartz sodium long rocks are typical sodium-rich jet sedimentary rocks, the sodium red platform group Ha Laba according to the ditch group is a set of coastal-shallow sea clastic rocks and volcanic-carbonate rocks, the construction is obviously controlled, the stratum has a distortion phenomenon in trend and tendency, and the stratum generally moves toward near things and is inclined to north.
Collecting 1:5 tens of thousands of geological mineral maps and 1:25 tens of thousands of geological mineral maps in a region, digitizing the data, and reserving the dividing precision of the 1:5 tens of thousands of original maps as much as possible in the digitizing process, wherein the original geological boundary is not simplified in principle. In the range of the research area, as the geological survey or the mine dispatching work of the area of 1:5 ten thousand is not carried out in part of the area, the 1:25 ten thousand area dispatching data are amplified to be 1:5 ten thousand scale, some pictures of the same stratum unit are divided into segment stratum units, and other pictures are divided into group-level units. According to the situation, rock horizons and rock combination characteristics of uncoordinated parts of splicing parts of different pictures are compared through field route geological investigation, so that the coordination is unified as much as possible, and then the splicing is performed, so that a complete geological mineral map of a research area is formed. The formation map of hot water sedimentary rock is compiled by analyzing the relative geological mineral data in the former zone, and the formation map is shown in figure 2.
(2) Filling and supplementing according to the integrity degree of the collected data, and utilizing 1:50 ten thousand, 1:20 ten thousand water system measurement result data are respectively extracted, main elements such as cobalt gold, cobalt iron, cobalt copper and the like are combined abnormally, a comprehensive prediction diagram of a target area is compiled in combination with the distribution condition of a hot water sedimentary rock stratum, a prospecting target area is initially defined, and the abnormal is further decomposed by utilizing the 1:2.5 ten thousand water system abnormal measurement result data, so that the target area is optimized.
Based on fig. 2, 1:20 ten thousand/1:50 ten thousand water systems copper-cobalt-gold combination in the nesting area is abnormal, an east Kunlun middle section cobalt ore formation prediction graph (fig. 3) is compiled, and an ore finding target area is primarily defined.
According to the Dongkunlun cobalt ore formation prediction graph (figure 3), a camel road ditch cobalt mining target area is selected for verification. AS03 abnormality is defined in 1:5 ten thousand water system sediment measurement encryption work carried out in the area, a camel road ditch AS03 comprehensive abnormality analysis chart (figure 4) is drawn, the abnormality is a camel road ditch mining area south mineralization zone abnormality, the abnormality is distributed from the east side of the south ditch to the camel road ditch, the abnormality is mainly composed of Au and Co elements, and the element combination is mainly composed of Ag, bi, pb, zn, cu, ni, as elements and the like. The comprehensive anomalies are distributed in an irregular strip shape in the east-west direction, the east-west direction is about 14km long, the north-south width is about 2.0-2.5km, and the area is about 35km 2 . The combination of abnormal elements is quite complex, and the abnormal overlapping and nesting degree of the elements is good (figure 4). The main elements Co and Au are abnormal, have obvious tertiary concentration bands and multiple concentration centers, and have larger abnormal scale and intensity. Wherein the Au anomalies are contained by the Co anomalies. Main element Co peak 79.4×10 -6 Average value 20.05X10 -6 A contrast value of 1.32; au peak 215×10 -9 Mean 17.13×10 -9 Contrast value 3.43.
(3) Developing a 1:1 geological map (figure 5) of key abnormal positions in the region, establishing a reasonable stratum sequence, finding out distribution characteristics, rock layer thickness, lithology, rock combination characteristics, lithology combination and the like of hot water sedimentary rocks, researching the mineral content of the hot water sedimentary rocks, and establishing a mineralization mark layer.
Physical property specimens were collected and measured for each major lithology in the region. The measurement results are shown in Table 1, the fine vein dip-dyed blocky pyrite cobalt ore and pyrite quartz sodalite are the characteristics of medium resistance and high polarization, the average value of the polarization rate is 6.97-17.24%, and the average value of the resistivity is 872-1232 omega M, which is the main abnormality type searched for in the area. The high-resistance low-polarization characteristics of the opal inolite and the quartz sodalite are adopted, the average value of the polarization rate is 0.72-0.74%, and the average value of the resistivity is 1141-1457Ω & M.
TABLE 1 statistical table of electrical parameters of camel road ditch rock (ore) stone
| Lithology of rock | Number of samples (Block) | Resistivity of omega M | Polarizability% |
| (Chlorois silk cloud) quartz schist | 169 | 1234 | 0.87 |
| Quartz sodium long rock | 120 | 1076 | 0.70 |
| Pyrite quartz sodalite | 50 | 1232 | 6.97 |
| Cobalt oxide ore | 27 | 886 | 0.11 |
| Lump pyrite cobalt ore | 43 | 872 | 17.24 |
| Phyllite spots | 10 | 162 | 0.88 |
| Quartz pulse | 3 | 3500 | 0.61 |
A 1:2 kilolocalization section and a 1:2 kiloexcitation middle ladder section developed on the earth surface of the area are defined according to the cobalt abnormal section (the section with Co element higher than the background value of the whole section is used as an abnormal section to define ore body) and the visual polarization rate>The results of the tank engineering verification of 1.5% of abnormal sites (FIG. 6) show that cobalt ore bodies, wherein TC25 has an ore width of about 32m and an average cobalt grade of 0.058×10 -2 Up to 0.45 x 10 -2 。
(4) Deep verification is carried out by drilling (figure 7), chemical samples are adopted in drilling engineering, co element values are analyzed, boundary grades larger than 0.02% are defined as ore bodies, meanwhile, a missed mineralization layer can be found by using a logging curve (figure 8) according to an electric logging (the physical property measurement result of rock ore in a combination area is likely to be a mineralization layer, and the mineralization degree can be judged by the relative size of visual polarization values, wherein the higher the visual polarization value is, the stronger the mineralization is). By comparing lithology, ore thickness and grade changes among adjacent boreholes (figure 7), the formation space distribution rule and the change rule of the ore-containing (chemical) layer in the whole area are comprehensively analyzed.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The method for exploring the hot water jet deposition type cobalt ore is characterized by comprising the following steps of:
step one: collecting area data to compile a stratum distribution diagram of hot water sedimentary rock, and primarily determining a favorable ore formation area of hot water jet deposition type cobalt ore;
step two: according to the measurement results of 1:50 ten thousand or 1:20 ten thousand water system sediments, a cobalt element anomaly map is compiled, a hot water sediments stratum distribution map is combined, a target area comprehensive prediction map is compiled, anomalies are further decomposed by using the measurement results of 1:5 ten thousand or 1:2.5 ten thousand water system sediments, and the target area is optimized;
step three: carrying out special investigation in the target area on the basis of the second step, establishing a mark layer by using a 1:1 geological special map, and then carrying out preliminary verification on the target area by using an excitation profile and/or a localization profile to outline a mineral body;
step four: and thirdly, performing deep verification by drilling, determining a deep mineral layer by using borehole electrical logging, comprehensively analyzing the change rule of the stratum and the mineral layer in the whole area by using the contrast of lithology and rock layer thickness among different boreholes, and comprehensively evaluating cobalt ores in the development area.
2. A method of investigation of hot water jet deposited cobalt ore according to claim 1, wherein step one collects a 1:5 geological map and/or a 1:25 geological map of the area, if necessary in combination with a field route geological investigation to compile a hot water deposited rock formation map.
3. The method for prospecting a hot water jet deposited cobalt mine according to claim 1, wherein in the second step, the cobalt element anomaly map includes a cobalt-gold element anomaly map, a cobalt-iron-lead-zinc element anomaly map, and a cobalt-copper element anomaly map.
4. The method for exploration of hot water jet deposition type cobalt ore according to claim 1, wherein in the third step, ore bodies are defined by an excitation abnormal region with low resistance and high polarization characteristics in the excitation profile result; and the section of the localization section Co element higher than the background value of the whole section is used as an abnormal section to define ore bodies.
5. The method of claim 4, wherein in the third step, the ore body is defined by using a visual polarization rate of 6.97-17.24% as a standard in the result of the excitation profile and/or the localization profile, and the scale of the excitation profile and/or the localization profile is 1:2000 or 1:5000.
6. The method for exploration of hot water jet deposition type cobalt ore according to claim 1, wherein in the fourth step, chemical samples are adopted in drilling engineering, and the element value of Co is analyzed, and boundary grade greater than 0.02% is defined as ore body.
7. The method for exploration of hot water jet deposition type cobalt ore according to claim 1, wherein in the fourth step, no obvious difference is generated on various rock ore layers according to a natural potential curve obtained by drilling logging, and ore body verification is performed on known ore (chemical) layers with obvious low-resistance high-polarization anomalies.
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