CN111983715A - High and cold mountain area mineral-forming distant view area delineating method based on regional geochemistry - Google Patents
High and cold mountain area mineral-forming distant view area delineating method based on regional geochemistry Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000013049 sediment Substances 0.000 claims abstract description 47
- 238000005070 sampling Methods 0.000 claims abstract description 44
- 238000005065 mining Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 230000001089 mineralizing effect Effects 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 238000012216 screening Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 11
- 230000033558 biomineral tissue development Effects 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 4
- 230000004075 alteration Effects 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 3
- 241000554155 Andes Species 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000002366 mineral element Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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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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Abstract
The method for delineating the mineral-forming scenic spot in the alpine mountain area based on regional geochemistry comprises the steps of predetermining regional objects delineating the mineral-forming scenic spot, obtaining known mining areas in the regional objects, and sampling field water system sediments in the known mining areas and around the known mining areas; classifying and screening the sampled sediments to obtain samples with different grain size grades; testing and analyzing the content of elements in samples with different grain size grades; comparing and studying element content data in samples with different grain size grades, and determining the optimal sampling granularity of the sediment; sampling field water system sediments in the whole area in the area object according to the optimal sampling granularity, and analyzing the element content of the sampled field water system sediments in the whole area; and determining a mineralizing element combination according to the mineralizing elements and the mineralizing types in the area objects, and defining geochemical anomaly and mineralizing scenic spots in the area objects by using the mineralizing element combination. The method effectively avoids the interference of the aeolian sand in the alpine mountain areas on the water system sediments, and accurately defines the mineral-forming distant areas of main mineral-forming elements.
Description
Technical Field
The invention relates to the technical field of regional geochemistry measurement, in particular to a method for delineating an alpine mountain area mineralization and distant scenic spots based on regional geochemistry.
Background
The regional geochemistry method is a method for researching the geochemistry problem of a specific region, mainly deepens the understanding of regional basic geology, the mineralization rule and the geological development history through regional rock geochemistry measurement, regional structure geochemistry and mineral deposit geochemistry, and is finally beneficial to regional mineral product prediction. The geochemical survey of regional rocks is used as basic geological survey work, and can define a mineral exploration distant view area and a mineral exploration target area for regional mineral exploration.
The mining prospect is a key area for further mineral product general survey which is determined by conjecture according to the research result of the mining law on the basis of mining prediction or regional geological mineral product survey and mineral product general survey. Due to the fact that the alpine mountain areas have special geographical and climatic conditions, generally, the wind sand is large, the water system sediment measurement is interfered by the wind sand, and the measurement result cannot reflect local mineralization information. It is difficult to accurately delineate the prospect of the main mineral elements.
In view of the common existence of alpine mountain areas on the earth and the non-specific geographic environment, a technical scheme for delineating a mineral-forming prospect area, which has universality for the alpine mountain areas and is realized without the help of specific geographic conditions, is urgently needed.
Disclosure of Invention
Therefore, the invention provides a method for delineating the mineral-forming distant scenic areas in the alpine mountain areas based on regional geochemistry, which effectively avoids the interference of the aeolian sand in the alpine mountain areas on water system sediments and accurately delineates the mineral-forming distant scenic areas of main mineral-forming elements.
In order to achieve the above purpose, the invention provides the following technical scheme: a method for delineating an alpine mountain area mining prospect based on regional geochemistry comprises the following steps:
step one, predetermining regional objects which define a mineral-forming distant scene area, acquiring a known mining area in the regional objects, and sampling field water system sediments around the known mining area and the known mining area;
step two, classifying and screening the sampled sediments to obtain samples with different particle size grades; testing and analyzing the content of elements in the samples with different particle size grades;
step three: comparing and studying element content data in the samples with different grain size grades obtained in the second step, and determining the optimal sampling granularity of the sediment;
step four: carrying out sampling on the field water system sediments in the whole area in the area object according to the optimal sampling granularity, and analyzing the element content of the sampled field water system sediments in the whole area;
step five: and determining a mineralizing element combination according to the mineralizing elements and the mineralizing types in the area objects, and defining geochemical anomaly and mineralizing scenic spots in the area objects by using the mineralizing element combination.
In a preferred embodiment of the method for delineating the mineral-forming distant scenic region in the alpine mountain region based on regional geochemistry, in the first step, water-system sediment sampling which is 1-2 times more encrypted than the geochemistry measurement sampling with the same scale is performed on the known mining region and the periphery of the known mining region in the regional object.
In a preferred embodiment of the method for delineating an ore-forming prospect in the alpine mountain area based on regional geochemistry, the first step is characterized in that the sampling medium is mainly water system sediments, and a soil sample is collected in an area without a water system.
And as a preferred scheme of a method for delineating mineral-forming scenic spots in alpine mountain areas based on regional geochemistry, in the second step, 80-mesh, 60-mesh and 10-mesh sieves are sampled in the field, each sediment sample is sieved into four equal weight samples smaller than 80 meshes, 60-10 meshes and 10 meshes, and the samples with different particle size grades after sieving are numbered.
In the second step, the numbered samples with different grain size grades are sent to a laboratory for testing and analyzing more than 39 elements and oxides.
In the third step, the element content of four samples with the sampling points smaller than 80 meshes, smaller than 60 meshes, 60 meshes to minus 10 meshes and smaller than 10 meshes of each sampling point is subjected to abnormal delineation, and the optimal sampling granularity in the regional object is obtained through the matching degree and the reaction condition of the element abnormality in the four size fraction samples and the known mining area.
In the fourth step, 60-10 mesh water system sediment samples collected in the whole regional object are sent to a laboratory for analysis.
And as a preferable scheme of the method for delineating the mineral-forming distant scenic areas in the alpine mountain areas based on regional geochemistry, in the step five, the mineral-forming distant scenic areas are delineated by combining a geological, structural and alteration comprehensive information method in regional objects.
The method comprises the steps of determining regional objects delimiting a mineral-forming distant area in advance before carrying out regional geochemical measurement in the alpine mountain area, obtaining known mining areas in the regional objects, and sampling field water system sediments around the known mining areas and the known mining areas; classifying and screening the sampled sediments to obtain samples with different grain size grades; testing and analyzing the content of elements in samples with different grain size grades; comparing and studying element content data in the samples with different grain size grades obtained in the second step, and determining the optimal sampling granularity of the sediment; sampling field water system sediments in the whole area in the area object according to the optimal sampling granularity, and analyzing the element content of the sampled field water system sediments in the whole area; and determining a mineralizing element combination according to the mineralizing elements and the mineralizing types in the area objects, and defining geochemical anomaly and mineralizing scenic spots in the area objects by using the mineralizing element combination. The sampling granularity and the method determined by the invention can effectively avoid the interference of the aeolian sand in the alpine mountain areas on the water system sediments and accurately define the mineral-forming prospect areas of main mineral-forming elements. The method is suitable for alpine mountain areas and similar areas, has strong applicability, and has reference significance for geochemical measurement work of other mountain areas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a flowchart of a method for delineating a mineral-forming prospect in an alpine mountain area based on regional geochemistry, provided in an embodiment of the present invention;
FIG. 2 is a drawing of a delineation of a mining prospect in a region of the Nanobigers of the Andes mining zone in south America according to the technical scheme of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a method for delineating an alpine mountain area mineralization and distant scenic spots based on regional geochemistry is provided, which comprises the following steps:
s1, predetermining area objects which define a mineral-forming distant view area, acquiring a known mining area in the area objects, and sampling field water system sediments around the known mining area and the known mining area;
s2, classifying and screening the sampled sediments to obtain samples with different particle size grades; testing and analyzing the content of elements in the samples with different particle size grades;
s3: comparing and studying element content data in the samples with different grain size grades obtained in S2 to determine the optimal sampling granularity of the sediment;
s4: carrying out sampling on the field water system sediments in the whole area in the area object according to the optimal sampling granularity, and analyzing the element content of the sampled field water system sediments in the whole area;
s5: and determining a mineralizing element combination according to the mineralizing elements and the mineralizing types in the area objects, and defining geochemical anomaly and mineralizing scenic spots in the area objects by using the mineralizing element combination.
Specifically, in S1, water-based sediment sampling is performed in the area object, wherein the known mining area and the periphery of the known mining area are encrypted by 1 to 2 times in comparison with the geochemical measurement sampling with the same scale. Thereby ensuring the uniformity and accuracy of water system sediment sampling. In S1, the soil sample is collected in an area where no water system exists, with the sampling medium mainly containing water system sediments.
Specifically, in S2, 80-mesh, 60-mesh, and 10-mesh screens are sampled in the field, each sediment sample is screened into four equal weight samples of less than 80-mesh, less than 60-mesh, 60-10-mesh, and less than 10-mesh, and the screened samples with different particle size grades are numbered. In S2, the numbered samples with different particle size grades are sent to a laboratory for more than 39 element and oxide test analysis.
Specifically, each size fraction sample is 250g, and is respectively numbered and sent to a laboratory for more than 39 element and oxide analysis tests.
Specifically, the 39 or more element and oxide species include Ag, Au, Cd, Hg, As, B, Ba, Be, Bi, Co, Cr, F, La, Li, Mn, Mo, Nb, Ni, P, Pb, Sb, Sn, Sr, Th, Ti, U, V, W, Y, Zn, Zr, Al2O3、CaO、Fe2O3、K2O、MgO、Na2O and SiO2。
In S3, the element content of four samples with the sampling point positions smaller than 80 meshes, smaller than 60 meshes, 60-10 meshes and smaller than 10 meshes is subjected to abnormal delineation, and the optimal sampling granularity in the regional object is obtained through the matching degree and the reaction condition of the element abnormality in the four size fraction samples and the known mining area.
In S4, the 60-to 10-mesh aqueous deposit samples collected in the entire area object are sent to a laboratory for analysis. And S5, defining a mineral prospect area by combining geological, structural and alteration comprehensive information methods in the regional objects. The interference of wind-blown sand can be avoided, the mining information of the earth surface and the deep part can be effectively revealed, and the mining of the region and the underground deep part can be guided.
Referring to fig. 2, by adopting the technical scheme of the invention, when regional geochemistry measurement is performed in the south american andes mineralization zone, the regional geochemistry measurement is used to define comprehensive abnormalities of different elements, and in combination with other characteristics of regional geology, structure, alteration and the like, a comprehensive information method is used to define 2 prospect areas: SANTA LINA-CO. CHIRAYA vein-like precious metals, nonferrous metal mineralization distant scenic region (II 1), SANTA ANA-SAN JOSE new generation precious metals, and nonferrous metal mineralization distant scenic region (II 2). The identified abnormal and mineral-forming distant scenic spots can effectively avoid the interference of aeolian sand, effectively reveal regional mineral-forming and deep mineral-forming information and guide the prospecting of the bronze mine.
The method comprises the steps of determining regional objects delimiting a mineral-forming distant area in advance before carrying out regional geochemical measurement in the alpine mountain area, obtaining known mining areas in the regional objects, and sampling field water system sediments around the known mining areas and the known mining areas; classifying and screening the sampled sediments to obtain samples with different grain size grades; testing and analyzing the content of elements in samples with different grain size grades; comparing and studying element content data in the samples with different grain size grades obtained in the second step, and determining the optimal sampling granularity of the sediment; sampling field water system sediments in the whole area in the area object according to the optimal sampling granularity, and analyzing the element content of the sampled field water system sediments in the whole area; and determining a mineralizing element combination according to the mineralizing elements and the mineralizing types in the area objects, and defining geochemical anomaly and mineralizing scenic spots in the area objects by using the mineralizing element combination. The sampling granularity and the method determined by the invention can effectively avoid the interference of the aeolian sand in the alpine mountain areas on the water system sediments and accurately define the mineral-forming prospect areas of main mineral-forming elements. The method is suitable for alpine mountain areas and similar areas, has strong applicability, and has reference significance for geochemical measurement work of other mountain areas.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A method for delineating an alpine mountain area mining prospect based on regional geochemistry is characterized by comprising the following steps:
step one, predetermining regional objects which define a mineral-forming distant scene area, acquiring a known mining area in the regional objects, and sampling field water system sediments around the known mining area and the known mining area;
step two, classifying and screening the sampled sediments to obtain samples with different particle size grades; testing and analyzing the content of elements in the samples with different particle size grades;
step three: comparing and studying element content data in the samples with different grain size grades obtained in the second step, and determining the optimal sampling granularity of the sediment;
step four: carrying out sampling on the field water system sediments in the whole area in the area object according to the optimal sampling granularity, and analyzing the element content of the sampled field water system sediments in the whole area;
step five: and determining a mineralizing element combination according to the mineralizing elements and the mineralizing types in the area objects, and defining geochemical anomaly and mineralizing scenic spots in the area objects by using the mineralizing element combination.
2. The method for delineating mineral-forming scenic spots in alpine mountain areas based on regional geochemistry according to claim 1, wherein in the first step, water-based sediment sampling which is encrypted 1-2 times more than the geochemistry measurement sampling with the same scale is performed in the known mine area and the periphery of the known mine area in the regional object.
3. The method for delineating an alpine mountain mining prospect area based on regional geochemistry as claimed in claim 2, wherein in the first step, the sampling medium is mainly water system sediments, and the soil sample is collected in an area without a water system.
4. The method for delineating mineral-forming scenic spots in alpine mountain areas based on regional geochemistry as claimed in claim 1, wherein in the second step, 80-mesh, 60-mesh and 10-mesh sieves are used for sampling and screening each sediment into four equal weight samples of less than 80-mesh, less than 60-mesh, 60-10-mesh and less than 10-mesh, and the samples with different particle size grades after sieving are numbered.
5. The method for delineating an alpine mountain area mineralization and distant landscape area based on regional geochemistry as claimed in claim 4, wherein in the second step, the numbered samples with different particle size grades are sent to a laboratory for more than 39 element and oxide test analyses.
6. The method for delineating mineral-forming scenic spots in alpine mountain areas based on regional geochemistry according to claim 1, wherein in the third step, the element contents of four samples with the size of less than 80 meshes, less than 60 meshes, 60 meshes to-10 meshes and less than 10 meshes at each sampling point are abnormally delineated, and the optimal sampling granularity in the regional object is obtained by matching the element abnormality in the four samples with the known mining area and the reaction condition.
7. The method for delineating mineral-forming scenic spots in alpine mountain areas based on regional geochemistry according to claim 6, wherein in the fourth step, 60-10 mesh water-based sediment samples collected in the whole regional subject are sent to laboratory for analysis.
8. The method for delineating mineral-forming distant scenic areas in alpine mountain areas based on regional geochemistry as claimed in claim 1, wherein in the fifth step, the mineral-forming distant scenic areas are delineated by combining geological, structural and alteration comprehensive information methods in regional objects.
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