WO2018087988A1 - Procédé de prospection de gisement métallifère, procédé de mise en valeur de ressources, procédé d'exploitation minière, procédé de production de sulfure de cuivre secondaire, procédé de production de ressources, procédé de mise en valeur de mine, et procédé de forage - Google Patents

Procédé de prospection de gisement métallifère, procédé de mise en valeur de ressources, procédé d'exploitation minière, procédé de production de sulfure de cuivre secondaire, procédé de production de ressources, procédé de mise en valeur de mine, et procédé de forage Download PDF

Info

Publication number
WO2018087988A1
WO2018087988A1 PCT/JP2017/030594 JP2017030594W WO2018087988A1 WO 2018087988 A1 WO2018087988 A1 WO 2018087988A1 JP 2017030594 W JP2017030594 W JP 2017030594W WO 2018087988 A1 WO2018087988 A1 WO 2018087988A1
Authority
WO
WIPO (PCT)
Prior art keywords
concentration
metal deposit
copper sulfide
reflection spectrum
depth direction
Prior art date
Application number
PCT/JP2017/030594
Other languages
English (en)
Japanese (ja)
Inventor
智二 三箇
亮 丸山
Original Assignee
Ｊｘ金属探開株式会社
Ｊｘ金属株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｊｘ金属探開株式会社, Ｊｘ金属株式会社 filed Critical Ｊｘ金属探開株式会社
Publication of WO2018087988A1 publication Critical patent/WO2018087988A1/fr

Links

Images

Classifications

    • 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
    • G01N33/20—Metals
    • G01N33/202—Constituents thereof
    • G01N33/2028—Metallic constituents
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
    • 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
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • 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
    • 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

Definitions

  • the present invention relates to a method for exploring a metal deposit in which a predetermined metal element is concentrated, a resource development method using the same, a mining method, a secondary copper sulfide production method, a resource production method, a mine development method, and a boring method.
  • the present invention proposes a technique that can estimate a metal deposit mainly existing underground, easily and with high accuracy.
  • Non-Patent Documents 1 and 2 remote sensing technology for measuring an object remotely by an artificial satellite or an aircraft, or the composition of a substance such as a mineral based on an optical technique
  • a substance such as a mineral based on an optical technique
  • Non-Patent Document 1 as a technique used when estimating surface materials of the earth and planets by remote sensing, the relationship between the chemical composition of silicate minerals such as pyroxene and olivine and absorption bands, and various The relationship between the particle size and mixing ratio of various mineral mixtures and the reflection spectrum is discussed.
  • Non-Patent Document 2 discusses an analysis method that takes into account the particle size and shape in the reflection spectrum of a mixture of minerals using a so-called isoparticle model (Isograin Model).
  • An object of the present invention is to solve such problems of the prior art, and the object of the present invention is to provide a method for exploring a metal deposit that can estimate the metal deposit easily and with high accuracy. Another object is to provide a resource development method, a mining method, a secondary copper sulfide production method, a resource production method, a mine development method, and a boring method using the same.
  • the inventor focused on the concentration distribution of a plurality of predetermined substances in the depth direction, and explored based on the relationship of the concentration distribution of these substances. It was found that the metal deposit can be easily found with high accuracy by performing the above.
  • primary mineralization zones such as primary copper sulfide are formed in deep underground, and the surroundings are altered. After the initial mineralization in which alteration zones containing minerals are formed, and after the initial mineralization, this approached the surface of the earth by uplift and erosion over the course of millions to tens of millions of years. Then, under the oxidizing environment due to rain, etc., the primary copper sulfide is leached and moved to form a secondary enrichment effect in which a secondary enrichment zone of high-grade secondary copper sulfide is formed under the groundwater surface. There are two processes. The secondary enrichment zone formed by the secondary enrichment gradually moves downward and grows due to the erosion of the ground surface and the lowering of the groundwater level, and becomes a metal deposit in which metal elements such as copper are concentrated.
  • the depth of kaolin mineral one of the altered minerals, was determined. It was found that the ratio of the concentration distribution in the vertical direction to the similar concentration distribution of the entire altered mineral tends to be similar to the similar concentration distribution of secondary copper sulfide.
  • the alteration strength of kaolin mineral expressed as the ratio of the concentration of kaolin mineral to the total concentration of alteration mineral, represents the strength of alteration accompanying secondary enrichment, and the concentration of secondary copper sulfide is leaching. And the amount of copper that has moved downward.
  • the method for exploring a metal deposit according to the present invention is to collect a sample in the depth direction at a target point, perform component analysis of the sample, and change the mineral at each position in the depth direction of the target point.
  • the concentration of kaolin mineral, the concentration of kaolin mineral and the concentration of secondary copper sulfide, respectively, and the ratio of the concentration of kaolin mineral to the total concentration of altered mineral at each position in the depth direction of the target point This includes estimating the presence of a metal deposit from the relationship between the altered strength of the kaolin mineral expressed and the concentration of the secondary copper sulfide.
  • the exploration method of the metal deposit according to the present invention is based on the relationship between the alteration strength of the kaolin mineral and the concentration of the secondary copper sulfide at each position in the depth direction, and the target point is each of the shallow portion and the deep portion in the depth direction. Is classified into one of a plurality of classification types of the shallow depth concentration classification based on the alteration strength of kaolin minerals and the concentration of secondary copper sulfide in Japan. It preferably includes inferring existence.
  • the shallow and deep concentration classification can be represented by a graph in which either the horizontal axis or the vertical axis is the alteration strength of the kaolin mineral, and the other axis is the concentration of the secondary copper sulfide. It is preferable that the deep and shallow portion concentration classification includes at least a plurality of types of classification depending on the alteration strength of the kaolin mineral and the concentration of secondary copper sulfide in each of the shallow portion and the deep portion in the depth direction of the target point.
  • the method for exploring a metal deposit according to the present invention is to collect samples at a plurality of target points in a target region, the total concentration of altered minerals at each position in the depth direction, the concentration of kaolin mineral, and the concentration of secondary copper sulfide. And obtaining a relationship between the alteration strength of the kaolin mineral and the concentration of secondary copper sulfide at each position in the depth direction, and from the classification of each target point by the above-mentioned shallow concentration classification, the target region It is preferable that the method further includes obtaining a plane distribution for each classification type of the deep and shallow portion concentration classification.
  • the reflection spectrum of the sample is observed, and the total concentration of altered minerals, the concentration of kaolin mineral, and the secondary copper sulfide concentration at each position in the depth direction are measured. It is preferable to perform a reflection spectrum analysis for measuring the concentration. In the reflection spectrum analysis, it is preferable to use a reflection spectrum in a wavelength region of 350 nm to 2500 nm. In the reflection spectrum analysis, it is preferable to use a reflection spectrum in a wavelength region of 1900 nm to 2500 nm. In the reflection spectrum analysis, it is preferable to use a reflection spectrum in a wavelength region of 900 nm to 2500 nm.
  • reflection spectrum analysis it is preferable to use a reflection spectrum in a wavelength region of 350 nm to 600 nm and 1600 nm to 2500 nm. In the reflection spectrum analysis, it is preferable to use reflection spectra in the wavelength regions of 500 nm to 600 nm and 900 nm to 1100 nm.
  • the secondary copper sulfide may include one or more selected from the group consisting of copper oxide minerals and chalcocite.
  • the kaolin mineral may include one or more selected from the group consisting of kaolinite, halloysite, and dickite.
  • the altered mineral includes at least a kaolin mineral, and may further include one or more selected from the group consisting of sericite, chlorite, chlorite, alumite, and iron alumite.
  • the resource development method of the present invention includes any one of the above-described metal deposit exploration methods.
  • the mining method of the present invention is to perform mining in an area including the target point where the presence of the metal deposit is estimated by any one of the above-described metal deposit exploration methods.
  • the method for producing secondary copper sulfide according to the present invention produces secondary copper sulfide in an area including the target point where the existence of the metal deposit is estimated by any one of the above-described metal deposit exploration methods.
  • the resource producing method of the present invention produces resources in an area including the target point where the existence of a metal deposit is estimated by any one of the above-described metal deposit exploration methods.
  • the mine development method of the present invention is to develop a mine in an area including the target point where the existence of the metal deposit is estimated by any one of the above-described metal deposit exploration methods.
  • the boring method of the present invention is to perform boring in an area including the target point where the presence of the metal deposit is estimated by any one of the above-described metal deposit exploration methods.
  • this boring method it is preferable to determine the density of boring in the region based on the relationship between the alteration strength of the kaolin mineral and the concentration of the secondary copper sulfide at the target point.
  • the reflection spectrum of the material constituting the hole wall of the boring is measured, and the drilling length of the boring point is determined based on the measurement result of the reflection spectrum. Is preferred.
  • the present invention by measuring the alteration strength of the kaolin mineral and the concentration of the secondary copper sulfide at each position in the depth direction of the target point, and estimating the presence of the metal deposit based on the relationship between them, Since the discoverability of the deposit is greatly increased, the metal deposit can be estimated easily and with high accuracy.
  • the method for exploring a metal deposit is to collect a sample in a depth direction at a target point, perform a component analysis of the sample, and change the quality at each position in the depth direction of the target point. Measuring the total concentration of mineral, the concentration of kaolin mineral and the concentration of secondary copper sulfide, and the ratio of the concentration of the kaolin mineral to the total concentration of the altered mineral at each position in the depth direction of the target point. The existence of a metal deposit is estimated from the relationship between the alteration strength of the kaolin mineral expressed by the above and the concentration of the secondary copper sulfide.
  • Metal deposit The present invention can be used, for example, for exploration of various metal deposits.
  • high-temperature groundwater by magma reacts with surrounding rocks, It is suitable to be applied to exploration of a hydrothermal deposit formed by precipitation of a metal element dissolved in a porphyry, among which a porphyry copper deposit.
  • IOCG type deposits iron oxide type copper gold deposits
  • skarn deposits shallow hot water deposits, etc. can be effectively applied because they involve alteration and Cu mineralization.
  • a sample is collected in a depth direction at one or a plurality of target points, for example, from the ground surface to a predetermined depth position.
  • the distance in the depth direction at which the sample is collected varies depending on the deposit to be explored, but in the case of open pit mining, it can usually be set to a depth position 400 m to 600 m away from the ground surface.
  • the drilling length of the scouring boring extends to a depth of about 300m to 400m away from the surface.
  • Samples are collected at the target point, generally by drilling (boring) to collect a boring core or a drilled rock and rock fragment in which the material from the surface to a predetermined depth is taken in a cylindrical shape. Can be done by.
  • sample component analysis After collecting the sample, perform component analysis of the sample, and at least the total concentration of altered minerals, the concentration of kaolin mineral and the concentration of secondary copper sulfide at each position in the depth direction of the target point, and if necessary Measure the concentration of other minerals.
  • the component analysis can be performed by X-ray diffraction (XRD), but from the viewpoint of easy analysis, it is preferable to perform the component analysis by reflection spectrum analysis for observing the reflection spectrum of the sample. is there. This is because the reflection spectrum analysis can be performed at a lower cost and in a shorter time than the analysis using the X-ray diffraction method or the like.
  • a portable reflection spectrum measuring instrument such as a spectrometer (spectrometer) can be used.
  • a reflection spectrum analysis method is described. First, a reflection spectrum of a predetermined substance concentration in a sample is observed in the depth direction within a wavelength region of 350 nm to 2500 nm by measuring with a spectrometer.
  • the observed value of the reflection spectrum is normalized (unit vectorized) to obtain the observed reflection spectrum. More specifically, normalization of the observed reflection spectrum should be performed by dividing each observation value by a predetermined reference observation value under the same conditions or the square root of the sum of squares of each value of the observation value. Can do.
  • the reason for this standardization is as follows.
  • the observed value is the amount of light incident on the sensor (absolute value). That is, in the satellite data, the sunlight, shade, solar altitude, atmospheric transparency, and the like change, so that the amount of incident light on the sensor that is observed differs even with the same substance. Similarly, in the case of a measuring device, the amount of incident light varies depending on the aging of the light source, the distance from the object, and the like. Since it is difficult to estimate a substance with such an incident light quantity, the above-described normalization is performed.
  • the observed reflection spectrum thus obtained is compared with the reflection spectra of predetermined various altered minerals, kaolin mineral, and secondary copper sulfide.
  • the reflection spectrum of a predetermined altered mineral, kaolin mineral, or secondary copper sulfide is known or can be obtained by separately measuring. According to the similarity by this comparison, it is possible to estimate the respective distributions of the total concentration of altered minerals, the concentration of kaolin mineral, and the concentration of secondary copper sulfide.
  • the total concentration of altered minerals can be obtained by estimating the concentrations of kaolin minerals, sericite, chlorite, and the like contained in altered minerals as described later and summing them.
  • a spectral angle mapper (SAM) method In order to measure the degree of similarity, for example, a spectral angle mapper (SAM) method, a cross-correlation method, or the like can be used.
  • SAM method is expressed as an n-dimensional vector corresponding to the number of bands, and a material such as an altered mineral that forms the minimum angle with this is output as a solution.
  • the cross-correlation method is a correlation coefficient between reflection spectra. In this case, a substance such as an altered mineral having the highest correlation coefficient is used as a solution, and these methods are already known in the technical field.
  • the concentration distribution of an altered mineral or the like can be evaluated by a Laplacian that represents a change in data at three consecutive points.
  • a Laplacian that represents a change in data at three consecutive points.
  • FIG. 1 (a) shows the reflection spectrum characteristics of plants, gallstones, silica peacock stone, brochant copper ore and atacama stone.
  • FIG. 1A shows the reflection spectrum characteristics of plants, gallstones, silica peacock stone, brochant copper ore and atacama stone.
  • FIG. 1A shows the reflection spectrum characteristics of plants, gallstones, silica peacock stone, brochant copper ore and atacama stone.
  • FIG. 1A shows the reflection spectrum characteristics different from those of plants, generally in the visible region and the short-wavelength infrared region.
  • FIG. 1B shows the reflection spectrum characteristics of quartz, sericite, kaolinite, and montmorillonite. From FIG. 1 (b), it can be seen that the mineral having an OH group has a characteristic reflection spectrum absorption in the wavelength region of 1300 to 2500 ⁇ m.
  • An appropriate wavelength region can be set according to the reflection spectral characteristics of each substance.
  • the wavelength range is 350 nm to 600 nm, particularly 400 nm to 600 nm, 1600 nm to 2500 nm, especially 1900 nm to 2500 nm. It is preferable to set.
  • the wavelength range of 2000 nm to 2500 nm is particularly effective.
  • the wavelength ranges of 500 nm to 600 nm and 900 nm to 1100 nm which are characterized by the reflection spectral characteristics of those minerals.
  • the spectrometer can be set to 1300 nm to 1600 nm.
  • the observed value of the reflection spectrum can be multispectral data obtained by observing only a specific wavelength.
  • the wavelength range from visible to short-wavelength infrared such as 400 nm to 2500 nm is continuously measured. It is preferable from the viewpoint of improving accuracy to obtain continuous spectrum data obtained by doing so.
  • Continuous spectrum data can be obtained by measuring with a predetermined portable reflection spectrum measuring machine. Specifically, for example, there is an ARCspector Rocket manufactured by AROptix Corporation, a Fieldspec manufactured by ASD Corporation, and the like.
  • a sample is collected in the depth direction at the target point, and by performing component analysis of the collected sample, at each position in the depth direction of the target point, at least, The total concentration of alteration minerals, the concentration of kaolin minerals and the concentration of secondary copper sulfide are measured.
  • the reason for measuring the concentration distribution in the depth direction of each substance in this way is as follows.
  • Metal deposits such as hydrothermal deposits, including the block rock copper deposit, are formed through two mineralization processes: primary mineralization and secondary enrichment.
  • primary mineralization as shown in Fig. 2 (a), the underground water of the stratified volcano 1 and so on is affected by the hot water 2 released from the deep underground as the magma rises.
  • a primary mineralized zone 3 containing primary copper sulfide and the like is formed at a deep location.
  • alteration zone 4 containing alteration minerals such as biotite, sericite and chlorite around the primary mineralization zone.
  • the primary copper sulfide is leached by the acid formed by the decomposition of pyrite by rain RF and the like, and the secondary enriched zone 6 is formed by depositing secondary copper sulfide and the like under the groundwater surface GL. Secondary enrichment effect occurs.
  • the secondary enrichment zone 6 as a whole moves downward due to surface erosion and groundwater level reduction, and grows as copper leached in the leaching zone 5 moves downward from the leaching zone 5.
  • alteration zone 4 containing alteration minerals generated by the primary mineralization is present around or in the vicinity thereof.
  • alteration minerals selenium, kaolin, iron alumite, etc.
  • leaching zone 5 alteration minerals (sericite mineral, kaolin, iron alumite, etc.) formed along with leaching are also present.
  • each target point where the component analysis in the depth direction was considered was divided into the deep part and the shallow part in the depth direction.
  • the classification can be generally made into a plurality of classification types, particularly, into four characteristic classification types A to D as shown in FIGS. 3 (a) to (d).
  • the number of classification types can be in the range of 2 to 9 types depending on the geological conditions of the area including the target point, and in particular, it can be in the range of 2 to 5 types. More preferably, it is more preferably in the range of two to four types.
  • FIGS. 3A to 3D will be described in detail as an example.
  • 3A to 3D are graphs in which the horizontal axis is the alteration strength (T_Kao / T_Clay) of the kaolin mineral, and the other axis is the concentration of secondary copper sulfide (CuSS).
  • the four classification types A to D classified according to the depth and shallowness concentration classification based on the alteration strength of the kaolin mineral and the concentration of secondary copper sulfide in each of the shallow SP and deep DP are shown.
  • SP represents the shallow part of the secondary enriched zone 6
  • DP represents the deep part of the secondary enriched zone 6.
  • the classification type A shown in FIG. 3 (a) shows that, due to the large amount of supply of copper and acid from the leaching zone 5, the shallower SP has higher alteration strength and the concentration of secondary copper sulfide is higher. Represents. It is effective to explore the underground of a zone where there are many points classified into this classification type A.
  • the classification type B shown in FIG. 3 (b) is similar to the classification type A in that the acid and copper are supplied in the shallow SP of the secondary enriched zone 6, but the amount is insufficient. In the deep DP of the secondary enriched zone 6, the concentration of secondary copper sulfide is reduced.
  • the shallow portion SP and the deep portion DP in the depth direction here, for example, in the depth direction, with the center position of the thickness (length in the depth direction) of the secondary enriched zone 6 as a boundary, from the center position
  • the upper part of the secondary enrichment zone 6 existing on the shallower side can be defined as the shallow part SP
  • the lower part of the secondary enrichment zone 6 present on the deeper side than the central position can be defined as the deep part DP.
  • the thickness of the secondary enrichment zone 6 is about 350 m at the maximum, so that it can be quantified and never deviated from the range.
  • the secondary enriched zone 6 can be divided into a shallow part SP and a deep part DP according to the kaolin mineral content and the behavior of secondary copper sulfide.
  • each target point can be classified into one of the above-described depth type concentration classification classifications A to D.
  • a plane distribution can be obtained for each classification type A to D in the target region.
  • the above-described altered mineral includes at least a kaolin mineral, and may further include one or more selected from the group consisting of sericite, chlorite, chlorite, alumite, and iron alumite.
  • sericite representing primary mineralization
  • kaolin mineral formed by secondary enrichment and iron alumite are particularly effective for ore exploration.
  • the kaolin mineral may contain one or more selected from the group consisting of kaolinite, halloysite, and dickite.
  • the secondary copper sulfide can include one or more selected from the group consisting of copper oxide minerals and chalcocite.
  • resource development As described above, after exploring a metal deposit, resource development can be performed based on the exploration results. More specifically, drilling and mining in a specified target area, including the target point where the existence of the metal deposit was estimated by the above-mentioned metal deposit exploration method, yielding resources such as secondary copper sulfide. And mine can be developed. This boring is an operation in which a cylindrical hole such as a cylinder is excavated in the ground, and a sample in the depth direction such as a core can be taken at that time, and is sometimes referred to as a borehole. . Boring is widely used in geological surveys and underground resource collection, and various boring methods including known or well-known boring methods can be employed in the present invention.
  • the density of the boring in the area that is, how dense the boring is performed in a plan view. More specifically, at the target points classified into the classification type C and the classification type D described above, it is presumed that the possibility of deposit distribution outside the area is low. Therefore, it can be determined that the boring density may be low even if the boring for the confirmation at the outside point is necessary.
  • the digging length of can be determined. For example, at the predetermined depth position, the above-mentioned alteration strength (T_Kao / T_Clay) of the kaolin mineral is calculated from the reflection spectrum, and if the T_Kao / T_Clay is still high, it is considered that it is necessary to dig to a deeper position.
  • T_Kao / T_Cray becomes sufficiently low, it is considered that boring has been carried out to a depth position that has passed through the secondary enrichment zone, and it is judged that no good part will come out even if drilling further. Can do.
  • T_Kao / T_Clay is high, a good secondary enrichment zone may be distributed deeper, and it can be determined that it is necessary to increase the excavation length.
  • the initial mineralization of the Caserones Copper Mine is a Cu-Mo porphyry type mineralization with dissite porphyry as the related igneous rock. Near the surface of the earth, there is a clear vertical zone of copper minerals, accompanied by a secondary enrichment zone of oxidation and a secondary enrichment zone of sulfide. As shown in FIG. 4, the ore deposit has a scale of approximately 1.5 km (NE-SW) ⁇ 2 km (NW-SE), and the high grade portion has a ridge (mainly extending in the NE-SW direction). CuS is distributed in the ridge portion (ridge ridge portion) extending in the southeast direction from the main ridge portion. As shown in FIG.
  • the vertical mineral zone is classified into an oxidized secondary enriched zone (OX), a sulfurized secondary enriched zone (SS), and a primary mineral zone (SP).
  • OX oxidized secondary enriched zone
  • SS sulfurized secondary enriched zone
  • SP primary mineral zone
  • LX leaching zone
  • the sulfurized secondary enrichment zone (SS) develops almost harmoniously with the ground surface from the ridge to the NW-SE section, but the NE-SW section is almost horizontal.
  • Chalcopyrite in the secondary sulfide enriched zone (SS) is often produced by replacing pyrite and chalcopyrite.
  • FIG. 6 shows the results of a borehole analysis at a predetermined point that captures a high-quality part where a secondary enrichment zone develops.
  • FIG. 6 shows the concentration distribution in the depth direction of each substance.
  • CuS secondary copper sulfide
  • CuINS primary copper sulfide
  • the CuS concentration gradually decreases from the shallow portion (SS_U) to the deep portion (SS_L), but the CuINS concentration increases in the deep portion (SS_L).
  • the total concentration of altered minerals gradually decreases from the shallow part (SS_U) to the deep part (SS_L).
  • the concentration of sericite does not vary greatly from the shallow part (SS_U) to the deep part (SS_L).
  • concentration of a kaolin-type mineral is high in the shallow part (SS_U), and is so low that it goes to the deep part (SS_L).
  • FIG. 7 shows the result of comparing the XRD results with the concentration estimated from the reflection spectrum as described above for the sericite, kaolin and iron alumite of the drilling core of the Caserones deposit.
  • the horizontal axis represents the XRD result
  • the vertical axis represents the density estimation result based on the reflection spectrum. For all minerals, a coefficient of determination close to 0.8 is obtained, and it can be seen that the reflection spectrum has sufficient estimation accuracy to be used as an indicator of alteration strength.
  • FIG. 8 shows the distribution in the depth direction of the alteration strength (T_Kao / T_Clay) and the secondary copper sulfide concentration (CuS_S) of the kaolin-based mineral at a predetermined point.
  • T_Kao represents the total content of kaolinite, halloysite, and the like
  • T_Clay represents the total content of kaolinite, sericite, and the like. From FIG. 8, T_Kao / T_Clay shows a variation similar to that of CuS_S, which means that more CuS is formed in the shallow portion where the secondary enrichment action is strongly generated.
  • FIG. 9 shows the relationship between T_Kao / T_Cray and the concentration of CuS for a secondary enriched zone where T_Kao / T_Clay> 0.1 at a given point.
  • “ ⁇ ” plots indicate measured values at different depth positions in the shallow secondary enriched zone
  • “ ⁇ ” plots indicate measured values at different depth locations in the secondary enriched zone. Value.
  • the correlation between T_Kao / T_Clay and CuS is strong. This indicates that in the secondary enriched zone shallow, there is a large supply of copper and acid from the upper leaching zone that has already been scraped off, It shows that it decreases as it goes.
  • Table 1 summarizes the amounts of primary copper sulfide and secondary copper sulfide and the formation process of the secondary enriched zone in each classification type A to D.
  • “ ⁇ ”, “ ⁇ ”, “ ⁇ ”, and “ ⁇ ” indicate that the amount of copper sulfide increases in this order from“ ⁇ ”to“ ⁇ ”.
  • the secondary enrichment action is classified into any of the four classification types A to D (classification types I to IV) for each drilling point, and the plane distribution plotted on the map is shown in FIG. From the results shown in FIG. 10, the planar distribution of the classification type is almost concentric, and the secondary enrichment is weak along the main ridge and the branch ridge in the periphery where there is little pyrite etc., and the secondary enrichment works strongly. I understand that. Thus, in the Caserones mine, it was found that the deposits by the secondary enrichment were formed in the area corresponding to the current ridge topography.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Medicinal Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geophysics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Soil Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Remote Sensing (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Abstract

Le procédé de prospection de gisement métallifère de l'invention inclut : une étape au cours de laquelle un échantillon est prélevée dans la direction de la profondeur d'un site cible ; une étape au cours de laquelle est effectuée une analyse des composants dudit échantillon, et la concentration totale en minéraux altérés, la concentration en minéraux de kaolin et la concentration en sulfure de cuivre secondaire, en chaque position dans la direction de la profondeur dudit site cible, sont chacune mesurées ; et une étape au cours de laquelle la présence d'un gisement métallifère est estimée à l'aide d'une relation entre ladite concentration en sulfure de cuivre secondaire, et une intensité de variation qualitative des minéraux de kaolin représentée par la proportion de ladite concentration en minéraux de kaolin par rapport à ladite concentration totale en minéraux altérés, en chaque position dans la direction de la profondeur dudit site cible.
PCT/JP2017/030594 2016-11-10 2017-08-25 Procédé de prospection de gisement métallifère, procédé de mise en valeur de ressources, procédé d'exploitation minière, procédé de production de sulfure de cuivre secondaire, procédé de production de ressources, procédé de mise en valeur de mine, et procédé de forage WO2018087988A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-220055 2016-11-10
JP2016220055A JP2018077172A (ja) 2016-11-10 2016-11-10 金属鉱床の探鉱方法、資源開発方法、採鉱方法、二次硫化銅の産出方法、資源産出方法、鉱山開発方法およびボーリング方法

Publications (1)

Publication Number Publication Date
WO2018087988A1 true WO2018087988A1 (fr) 2018-05-17

Family

ID=62109511

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/030594 WO2018087988A1 (fr) 2016-11-10 2017-08-25 Procédé de prospection de gisement métallifère, procédé de mise en valeur de ressources, procédé d'exploitation minière, procédé de production de sulfure de cuivre secondaire, procédé de production de ressources, procédé de mise en valeur de mine, et procédé de forage

Country Status (2)

Country Link
JP (1) JP2018077172A (fr)
WO (1) WO2018087988A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114459805A (zh) * 2022-02-16 2022-05-10 山东省地质矿产勘查开发局第六地质大队(山东省第六地质矿产勘查院) 一种适用于盆缘地区金矿找矿方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114280684B (zh) * 2021-12-24 2023-06-16 成都理工大学 基于白云母波长变化的热液型矿床找矿方法及系统

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
COOKE,DAVID R. ET AL.: "Australian and western Pacific porphyry Cu-Au deposits", AGSO JOURNAL OF AUSTRALIAN GEOLOGY & GEOPHYSICS, vol. 17, no. 4, 1998, pages 97 - 104, XP055498638 *
SHOJI KOJIMA ET AL.: "Recent studies on origin and chemical behavior of Au-Cu in magmatic- hydrothermal deposits", RESOURCE GEOLOGY, vol. 56, 2006, pages 35 - 46, XP055498633 *
TASSONGWA,B ET AL.: "Geochemical and Mineralogical Characteristics of the Mayouom Kaolin Deposit, West Cameroon", EARTH SCIENCE RESEARC H, vol. 3, no. 1, 2014, pages 94 - 107, XP055501742 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114459805A (zh) * 2022-02-16 2022-05-10 山东省地质矿产勘查开发局第六地质大队(山东省第六地质矿产勘查院) 一种适用于盆缘地区金矿找矿方法

Also Published As

Publication number Publication date
JP2018077172A (ja) 2018-05-17

Similar Documents

Publication Publication Date Title
WO2018061559A1 (fr) Procédé d'exploitation de dépôt métallifère, procédé de développement de ressources, procédé d'exploitation, procédé de production de sulfure de cuivre secondaire, procédé de production de ressources, procédé de développement de mine, et procédé de forage
Graham et al. Application of imaging spectroscopy for mineral exploration in Alaska: A study over porphyry Cu deposits in the eastern Alaska Range
Herrmann et al. Short wavelength infrared (SWIR) spectral analysis of hydrothermal alteration zones associated with base metal sulfide deposits at Rosebery and Western Tharsis, Tasmania, and Highway-Reward, Queensland
JP2018059888A (ja) 金属鉱床の探鉱方法、資源開発方法、採鉱方法、二次硫化銅の産出方法、資源産出方法、鉱山開発方法およびボーリング方法
L'Haridon et al. Chemical variability in mineralized veins observed by ChemCam on the lower slopes of Mount Sharp in Gale crater, Mars
Fox et al. Applications of hyperspectral mineralogy for geoenvironmental characterisation
CN107589094B (zh) 基于光谱特征的鞍山式铁矿石类型确定方法
CN105510989B (zh) 一种适用于砂岩型铀矿层间氧化带特征的研究方法
Martínez et al. A multidisciplinary characterization of a tailings pond in the Linares-La Carolina mining district, Spain
FitzpatRick Nature, distribution, and origin of soil materials in the forensic comparison of soils
Corral et al. Origin and evolution of mineralizing fluids and exploration of the Cerro Quema Au-Cu deposit (Azuero Peninsula, Panama) from a fluid inclusion and stable isotope perspective
De la Rosa et al. Mineral quantification at deposit scale using drill-core hyperspectral data: A case study in the Iberian Pyrite Belt
Lemière et al. XRF and LIBS for Field Geology
WO2018087988A1 (fr) Procédé de prospection de gisement métallifère, procédé de mise en valeur de ressources, procédé d'exploitation minière, procédé de production de sulfure de cuivre secondaire, procédé de production de ressources, procédé de mise en valeur de mine, et procédé de forage
Huntley Looking up and looking down: pigment chemistry as a chronological marker in the Sydney Basin rock art assemblage, Australia
Shi et al. Using hyperspectral data and PLSR modelling to assess acid sulphate soil in subsurface
McClenaghan et al. Review of till geochemistry and indicator mineral methods for mineral exploration in glaciated terrain
Zuo et al. Short-wavelength infrared spectral analysis and 3D vector modeling for deep exploration in the Weilasituo magmatic–hydrothermal Li–Sn polymetallic deposit, inner mongolia, NE China
CN109709623A (zh) 非破坏性的金矿化作用探测方法
Hafez et al. Geochemical survey of soil samples from the archaeological site Dromolaxia-Vyzakia (Cyprus), by means of micro-XRF and statistical approaches
WO2018061561A1 (fr) Procédé d'estimation de présence de composé métallique, procédé d'exploration de dépôt métallifère, procédé de développement de ressource, procédé d'exploitation, procédé de production de sulfure de cuivre secondaire, procédé de production de ressource, procédé de développement de mine, et procédé de forage
Asadzadeh et al. Alteration Mineral Mapping of the Shadan Porphyry Cu-Au Deposit (Iran) Using Airborne Imaging Spectroscopic Data: Implications for Exploration Drilling
Yajima ASTER data analysis applied to mineral resource exploration and geological mapping
JP2018059889A (ja) 金属化合物の存在推定方法、金属鉱床の探鉱方法、資源開発方法、採鉱方法、二次硫化銅の産出方法、資源産出方法、鉱山開発方法およびボーリング方法
Nwaila et al. Constraints on the geometry and gold distribution in the Black Reef Formation of South Africa using 3D reflection seismic data and Micro-X-ray computed tomography

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17869633

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17869633

Country of ref document: EP

Kind code of ref document: A1