CN110221356B - Method for searching favorable mineralization area of magma copper-nickel sulfide deposit - Google Patents
Method for searching favorable mineralization area of magma copper-nickel sulfide deposit Download PDFInfo
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- CN110221356B CN110221356B CN201910389511.XA CN201910389511A CN110221356B CN 110221356 B CN110221356 B CN 110221356B CN 201910389511 A CN201910389511 A CN 201910389511A CN 110221356 B CN110221356 B CN 110221356B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- YFLLTMUVNFGTIW-UHFFFAOYSA-N nickel;sulfanylidenecopper Chemical compound [Ni].[Cu]=S YFLLTMUVNFGTIW-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 230000033558 biomineral tissue development Effects 0.000 title claims abstract description 13
- 230000002349 favourable effect Effects 0.000 title claims description 17
- 239000011435 rock Substances 0.000 claims abstract description 96
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 50
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 29
- 229910052742 iron Inorganic materials 0.000 claims description 25
- 229910052759 nickel Inorganic materials 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052611 pyroxene Inorganic materials 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 3
- 238000009614 chemical analysis method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000009545 invasion Effects 0.000 description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 208000035126 Facies Diseases 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 241001268392 Dalla Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000030627 Trapezites Species 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 230000001089 mineralizing effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052569 sulfide mineral Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a method for searching an advantageous mineralization area of a magma copper-nickel sulfide deposit, which is used for delineating the advantageous mineralization area of the copper-nickel sulfide deposit by a remote sensing image method and a chemical analysis method and combining the characteristics of a rock body and a rock. Compared with the existing drilling engineering technology, the method has the advantages of low cost, short period and high safety.
Description
Technical Field
The invention belongs to the technical field of geological mineral products, and particularly relates to a method for searching a favorable mineralization area of a magma copper nickel sulfide deposit.
Background
Magma copper nickel sulfide deposits are important sources of copper, nickel and cobalt resources in China, and are the most important contributors to global nickel and Platinum Group Elements (PGE). The nickel and platinum group elements in China are relatively poor in resources, and with the rapid development of social economy, the consumption of resources is increased day by day, so that the demand of national economy development can not be met. Therefore, the research and the prospecting of the magma copper-nickel sulfide deposit have important scientific, economic and practical significance for solving the shortage of nickel, cobalt and platinum group element resources in China.
With the continuous mining consumption of mineral resources such as copper, nickel, PGE and the like, more and more attention is paid to the searching of new magma sulfide mineral deposits and the prospecting prediction in the deep part and the periphery of old mineral deposits, while the existing exploration mainly depends on a large amount of physical exploration and drilling engineering, and the cost is high, the period is long, and the risk is large.
Disclosure of Invention
Aiming at the technical problems, the invention provides a method for searching the favorable mineralization area of the magma copper nickel sulfide deposit, and solves the problems of high cost, long period and high risk in the existing exploration process.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of finding a favorable mineralization zone of a magma copper nickel sulfide deposit, comprising the steps of:
step 1, obtaining a remote sensing image of a region to be researched, determining whether a basic-super-basic rock mass exists in the region to be researched, if so, determining the region to be researched as a research region, and performing step 2; otherwise, acquiring a new area to be researched, and performing the step 1;
step 2, carrying out field geological inspection, determining whether an iron basic-super basic rock mass exists in the basic-super basic rock mass, and if so, taking the preliminarily determined area as a research area to carry out step 3; otherwise, returning to the step 1;
step 3, determining the rock mass area of the iron basic-super basic rock mass, if the rock mass area is less than 10 square kilometers, belonging to the iron basic-super basic small rock mass, and performing step 4; otherwise, returning to the step 1;
step 4, determining whether an iron-based-super-based small rock mass with more than 2 rock phases exists in the iron-based-super-based small rock mass region, if so, determining a region with the nickel or copper grade being more than or equal to 0.2% through a bedrock chemical sampling analysis circle, and performing step 5; otherwise, returning to the step 1;
step 5, determining whether a lithofacies with the content of the volume of the aeolian pyroxene being more than 10% exists in the small iron-based-super-based rock body area with more than 2 lithofacies, if so, determining a lithofacies area with the content of the volume of the aeolian pyroxene being more than 10%, and overlapping the area with an area with the grade of nickel or copper being more than or equal to 0.2%, wherein the overlapped area is an ore formation area favorable for a magma copper-nickel sulfide deposit; if not, returning to the step 1.
Specifically, in the step 1, a dark-tone, round and normal-terrain area is selected as the basic-ultrabasic rock area on the natural color image of the remote sensing image map.
Specifically, the determination process of the iron-based-super-based rock mass in the step 2 is as follows: and (2) carrying out field geological inspection in the research area determined in the step (1), determining the contact relation between the basic-super basic rock mass and the surrounding rock, and if the basic-super basic rock mass and the surrounding rock are in an invasion contact relation and a condensation edge or a hot baking edge exists, determining that the basic-super basic rock mass is an iron basic-super basic rock mass.
Compared with the prior art, the invention has the beneficial effects that:
the method of the invention defines the favorable ore formation area of the copper-nickel fluidized bed by a remote sensing image method, a chemical analysis method and combining the characteristics of the rock mass, and compared with the prior geophysical prospecting and drilling engineering technology, the method has the advantages of low cost and short period.
The invention provides a method for searching a favorable mineralization area of a copper-nickel sulfide deposit based on the thought that an iron-based-super-based small rock mass area and a lithofacies area with the content of the orthorhombic pyroxene being more than 10% are main factors of the condition of forming the magma copper-nickel sulfide deposit, and provides a new thought for the exploration of the copper-nickel sulfide deposit.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
FIG. 2 is a diagram of a fundamental-ultrafundamental rock volume distribution in Xinjiang and the Town Dala reservoir shore region, remotely interpreted in an embodiment of the invention.
FIG. 3 is a diagram showing the contact relationship between the rock body and the surrounding rock in the embodiment.
FIG. 4 is the number and area of rock mass in the example.
Figure 5 is a rock geology map of an embodiment.
FIG. 6 shows a region where the nickel or copper grade is 0.2% or higher as circled in the examples.
FIG. 7 is a diagram of favorable mineralizing regions of the Darashike shore area, Final county, in Sinkiang, as determined by the present invention.
Detailed Description
The invention discloses a method for searching a favorable mineralization area of a magma copper nickel sulfide deposit, which specifically comprises the following steps:
step 1, obtaining a remote sensing image of a region to be researched, determining whether a basic-super basic rock mass exists in the region to be researched on a TM/ETM RGB321 natural color image, wherein the basic-super basic rock mass is dark, round and normal in the obtained remote sensing image, and if the basic-super basic rock mass exists in the region to be researched, determining the region to be researched as a research region, and performing step 2; otherwise, acquiring a new area to be researched, and performing the step 1;
in the invention, the dark tone refers to dark color, mainly including purple, black and dark gray, specifically refers to a part with the reflectivity value lower than 10% extracted from a remote sensing image, the shape of a full circle refers to that the distance L from a central point to any point on the periphery is 0.9 a-a, and a is 0.6-6 × 104And (4) rice. The regular terrain is a terrain higher than the adjacent terrain and is convex.
In a specific embodiment of the invention, the area of the bank of dala storehouse in Xinjiang and the final county is taken as a region to be researched, five geologic bodies with dark tones, ellipses, muddy circles and regular terrains are interpreted by remote sensing, as shown in figure 2, the existence of basic-super-basic rock mass is determined, and the region is determined as a research region.
Step 2, performing field geological inspection within the research range obtained in the step 1, finding out the contact relationship between the basic-super basic rock body and the surrounding rock, if the rock body and the surrounding rock are in an invasion contact relationship and a condensation edge or a hot baking edge exists, determining that the basic-super basic rock body belongs to an iron basic-super basic rock, and after determining the iron basic-super basic rock, taking the preliminarily determined region (namely the research region determined in the step 1) as a research region to perform a step 3; otherwise, returning to the step 1;
wherein the surrounding rock is rock around the basic-super basic rock mass; the invasion contact relation refers to a contact relation formed by invasion of rock slurry into a previously formed rock stratum (surrounding rock), a contact interface of an invasion body and the surrounding rock intersects with a surrounding rock surface, the invasion body often has a quenched condensation edge, and the surrounding rock often has a roasting edge.
As shown in fig. 3, in the preliminarily determined research area in the area of dalla reservoir bank, the rock mass (olivine) and the surrounding rock (granite) contact boundary curve, the rock mass and the surrounding rock are in an invasion contact relationship, and a hot baking edge exists, so that the basic-super-basic rock type belongs to an iron-basic-super-basic rock body.
Step 3, determining the rock mass area of the iron-based-super-based rock mass in the research area, and if the rock mass area is less than 10 square kilometers, determining the rock mass belongs to an iron-based-super-based small rock mass, and performing step 4; otherwise, returning to the step 1;
as shown in fig. 4, in the basic-super basic rock mass region in da la kusan of the final county in Xinjiang, the areas of 5 rock masses are all less than 5000 square meters, that is, the areas of the rock masses are all less than 10 square kilometers, and then the rock mass belongs to an iron basic-super basic small rock mass.
Step 4, determining rock types through field geological observation and indoor identification, dividing lithofacies according to the rock types, determining whether iron-based-super-based small rock bodies with more than 2 lithofacies exist in the iron-based-super-based small rock body area, if so, obtaining the grade of nickel or copper in the rock through chemical analysis of the bedrock, delineating the area with the grade of the nickel or copper being more than or equal to 0.2%, and carrying out step 5; otherwise, returning to the step 1;
as shown in fig. 5, according to field geological observation and indoor identification, the determined rock types include: gabbros, monothiopsites, bistilbite, olivinites, monothiopsites, bistilbite. As shown in fig. 5, a total of 6 facies, i.e., more than 2 facies, are defined.
As shown in fig. 6, matrix chemical sampling analysis is performed on the shore-based-super-matrix rock mass of dallacu shore in Xinjiang and Final county, the main elements of matrix chemical sample analysis include Cu, Ni, Cr, Co, Pt, Pd, S, As and the like, and according to the grade values of the analyzed elements, a region with the grade of nickel or copper being more than or equal to 0.2% in the rock mass is defined.
And 5, determining whether a lithofacies with the content of the volume of the aeolian pyroxene being more than 10% exists in the small iron-based-super-based rock body area with the redundant 2 lithofacies obtained in the step 4, if so, delineating a lithofacies area with the content of the volume of the aeolian pyroxene being more than 10%, and superposing the area and the area with the nickel and copper grade being more than or equal to 0.2% obtained in the step 4, wherein the superposed area is an ore formation area which is favorable for a magma copper nickel sulfide deposit. If not, returning to the step 1.
In Dala reservoir bank in Xinjiang and the final county, within the range of Dala reservoir bank basic-super basic 'small rock mass' determined by the step 4, there are bihui olivary facies and bihui lithofacies with the content of the trapezite of more than 10% in the rock mass I and the rock mass II; and (3) superposing the lithofacies region with the content of the aeolian pyroxene being more than 10% and the mineralized region obtained in the step (4) to obtain an overlapped region (such as a gray shaded region in the figure 7). The overlapping area is the favorable mineralization area of the magma copper nickel sulfide deposit.
The real-time process shows that the invention accurately distinguishes rock masses of different types through systematic geological research work, delimitates favorable sections for prospecting, exerts geological advanced prospecting method, is necessary for prospecting of magma sulfide deposits and has great significance.
It should be noted that the present invention is not limited to the above embodiments, and all equivalent changes based on the technical solutions of the present application fall into the protection scope of the present invention.
Claims (3)
1. A method of finding a favorable mineralization zone of a magma copper nickel sulfide deposit, comprising the steps of:
step 1, obtaining a remote sensing image of a region to be researched, determining whether a basic-super-basic rock mass exists in the region to be researched, if so, determining the region to be researched as a research region, and performing step 2; otherwise, acquiring a new area to be researched, and performing the step 1;
step 2, carrying out field geological inspection, determining whether an iron basic-super basic rock mass exists in the basic-super basic rock mass, and if so, taking the research area determined in the step 1 as a research area and carrying out a step 3; otherwise, returning to the step 1;
step 3, determining the rock mass area of the iron basic-super basic rock mass, if the rock mass area is less than 10 square kilometers, belonging to the iron basic-super basic small rock mass, and performing step 4; otherwise, returning to the step 1;
step 4, determining whether an iron-based-super-based small rock mass with more than 2 rock phases exists in the iron-based-super-based small rock mass region, if so, determining a region with the nickel or copper grade being more than or equal to 0.2% through a bedrock chemical sampling analysis circle, and performing step 5; otherwise, returning to the step 1;
step 5, determining whether a lithofacies with the content of the volume of the aeolian pyroxene being more than 10% exists in the small iron-based-super-based rock body area with more than 2 lithofacies, if so, determining a lithofacies area with the content of the volume of the aeolian pyroxene being more than 10%, and overlapping the area with an area with the grade of nickel or copper being more than or equal to 0.2%, wherein the overlapped area is an ore formation area favorable for a magma copper-nickel sulfide deposit; if not, returning to the step 1.
2. The method for finding the favorable mineralization area of the magma cupronickel sulfide deposit as claimed in claim 1, wherein in step 1, dark-toned, rounded and orthophoric areas are selected as the basic-ultrabasic rock areas from the natural color images of the remote sensing images.
3. The method for finding favorable mineralization of a magma cupronickel sulfide deposit, according to claim 1, wherein the determination of the iron-based-ultrabasic rock mass in step 2 is performed by: and (3) carrying out field geological check in the research area determined in the step (1), determining the contact relation between the basic-super basic rock mass and the surrounding rock, and if the basic-super basic rock mass and the surrounding rock are in an invasive contact relation, determining that the basic-super basic rock mass is an iron basic-super basic rock mass.
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| WO2022036939A1 (en) * | 2020-08-18 | 2022-02-24 | 中国地质科学院矿产资源研究所 | Ore prospecting method based on placer gold pointer mineralogy |
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Effective date of registration: 20231227 Address after: No. 28, 13th Floor, Block C, Furunde Building, No. 2 Shengguo Road, Korla City, Bayingolin Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region, 841000 Patentee after: Xinjiang Tianshan Mining Development Co.,Ltd. Address before: 710064 No. 126 central section of South Ring Road, Yanta District, Xi'an, Shaanxi Patentee before: CHANG'AN University |