Method for analyzing and evaluating nickel-cobalt mineral content of ultra-basic rock

Abstract

The invention relates to a method for analyzing and evaluating nickel-cobalt mineral content of ultra-basic rock. The method comprises the following steps: S1, data collection and comprehensive analysis; s2, performing hyperspectral remote sensing interpretation; s3, performing field geological survey; s4, rock geochemistry and isotope analysis; s5, carrying out construction-magma-metallogenic coupling research; s6, performing mineralization model and resource evaluation; the method can make up for the defect of lack of methods for evaluating the mineral content of nickel and cobalt in basic and ultra-basic rocks in the prior art.

Description

Technical Field

[0001] The present application relates to the field of mineral exploration technology, and in particular to a method for analyzing and evaluating the nickel-cobalt mineralization of ultramafic rocks. Background Art

[0002] According to the China Geological Survey, new energy minerals generally refer to the mineral resources needed for the development and utilization of new energy, mainly including more than ten types of minerals such as lithium, aluminum, cobalt, nickel, copper, vanadium, and silicon (high-purity quartz). The global energy system is accelerating the transition from traditional energy to new energy.

[0003] Located at the junction of the Tethys-Himalayan tectonic domain and the Pacific Rim, the region boasts frequent and intense tectonic-magmatic activity, favorable mineralization conditions, and widespread distribution of nickel, cobalt, and other minerals, offering enormous prospecting potential. Nickel deposits are primarily distributed in the Ailao Mountain metallogenic belt, with cobalt deposits often associated, and copper deposits occurring in diverse locations. Therefore, strengthening the evaluation of nickel and cobalt mineralization in basic and ultrabasic rocks in the central and southern sections of the Ailao Mountain and summarizing the evaluation and prediction system will help improve resource security capabilities, thereby clarifying the nickel and cobalt mineral resource base in Yunnan Province and optimizing resource allocation. Currently, there is no method for evaluating mineral system types. Summary of the Invention

[0004] In order to solve or partially solve the problems existing in the relevant technology, the present application provides a method for analyzing and evaluating the mineralization of nickel and cobalt in ultramafic rocks, which can make up for the defect of the lack of evaluation method for the mineralization of nickel and cobalt in basic and ultramafic rocks in the existing technology.

[0005] The present application discloses a method for analyzing and evaluating the mineralization of ultramafic rock nickel and cobalt, comprising the following steps: S1: data collection and comprehensive analysis; S2: Hyperspectral remote sensing interpretation; S3: Field geological survey; S4: Rock geochemistry and isotope analysis; S5: Tectonic-magmatic-metallogenic coupling research; S6: Mineralization model and resource evaluation.

[0006] Optionally, in step S1, geological data and historical data are collected in the area to be evaluated, and the spatiotemporal distribution and petrological characteristics of basic and ultrabasic rocks are determined based on the collected data, and the petrographic classification and magma evolution sequence of the rock mass are established.

[0007] Optionally, in step S2, hyperspectral remote sensing interpretation is carried out in the study area, focusing on interpreting hidden faults and rock masses that are difficult to detect by traditional means.

[0008] Optionally, in step S3, the following three steps are performed: ① Rock mass mapping: Conduct 1:50,000 special geological mapping in the study area, focusing on tracking the distribution, contact relationship and alteration characteristics of major basic and ultrabasic rocks; ② Mineralized outcrop research: systematically collect mineralized outcrops, cores, and surrounding rock samples to record the mineralization type and spatial distribution; ③ Structural analysis: measure the occurrence of joints and faults, and analyze the control of structure on magma intrusion and mineral fluid migration.

[0009] Optionally, in step S4, the following three methods are used: ① Major and trace elements: X-ray fluorescence spectroscopy and inductively coupled plasma mass spectrometry are used to analyze the chemical composition of rocks and identify the rock type and diagenetic environment; ② Isotope dating: The zircon U-Pb method is used to determine the age of rock formation, and the Re-Os method is used to determine the age of sulfide mineralization, thus establishing a rock-forming-metallogenic time series; ③Sulfide mineralogy: Analyze the composition of sulfides through electron probe and laser ablation-ICP-MS to reveal the properties of mineralizing fluids.

[0010] Optionally, in step S5, ① structural evolution simulation: combining the regional structural evolution history to analyze the spatiotemporal relationship between rock emplacement and mineralization; ② fluid inclusion research: using microthermometry and laser Raman spectroscopy to analyze fluid inclusions and explore the source and evolution of mineralizing fluids.

[0011] Optionally, in step S6, the following three steps are performed: ① Analogy study: Compare the mineralization mechanisms of typical nickel deposits such as Jinchuan and Kalatongke to establish a nickel-cobalt mineralization model in the region; ② 3D geological modeling: integrating geological and geophysical data to identify favorable areas for deep concealed ore bodies; ③ Delineate target areas: Delineate prospecting target areas, put forward exploration suggestions, and form an evaluation and prediction indicator system.

[0012] The technical solution provided by this application may have the following beneficial effects: This device provides a new method for analyzing and evaluating the nickel-cobalt mineralization of ultramafic rocks, which can further narrow the scope of the mining area, reduce working hours, and reduce large-scale manual field surveys, saving time and manpower. It can also construct corresponding three-dimensional geological modeling to facilitate the delineation of target areas, provide reasonable suggestions for the final exploration, and form an evaluation and prediction index system, thus making up for the shortcomings of existing technologies.

[0013] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0015] Figure 1 It is a structural diagram shown in an embodiment of the present application. DETAILED DESCRIPTION

[0016] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0017] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0018] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0019] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0020] In response to the above problems, an embodiment of the present application provides a method for analyzing and evaluating the nickel-cobalt mineralization of ultramafic rocks. The technical solution of the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 The method for analyzing and evaluating the nickel-cobalt mineralization of ultrabasic rocks shown in the figure comprises the following steps: S1: Data collection and comprehensive analysis: Gather geological and historical data from the area to be assessed. Based on this data, determine the spatiotemporal distribution and petrological characteristics of basic and ultrabasic rocks, establish a petrographic classification of the rock mass, and establish a magmatic evolution sequence. This allows the scope of the mining area to be further narrowed, reducing work hours, based on these characteristics and sequences.

[0022] S2: Hyperspectral remote sensing interpretation: Hyperspectral remote sensing interpretation will be conducted in the study area, focusing on hidden faults and rock masses that are difficult to detect using traditional methods. This will reduce the need for large-scale manual field surveys, saving time and manpower.

[0023] S3: Field geological survey, conducted through the following three steps: ① Rock mass mapping: Conduct 1:50,000 special geological mapping in the study area, focusing on tracking the distribution, contact relationship and alteration characteristics of major basic and ultrabasic rocks; ② Mineralized outcrop research: systematically collect mineralized outcrops, cores, and surrounding rock samples to record the mineralization type and spatial distribution; ③ Structural analysis: Measure the occurrence of joints and faults, and analyze the control of structure on magma intrusion and ore fluid migration, thus providing data support for structural models.

[0024] S4: Rock geochemistry and isotope analysis is performed through the following three methods: ① Major and trace elements: X-ray fluorescence spectroscopy and inductively coupled plasma mass spectrometry are used to analyze the chemical composition of rocks and identify the rock type and diagenetic environment; ② Isotope dating: The zircon U-Pb method is used to determine the age of rock formation, and the Re-Os method is used to determine the age of sulfide mineralization, thus establishing a rock-forming-metallogenic time series; ③ Sulfide mineralogy: Analyze the composition of sulfides through electron microprobe and laser ablation-ICP-MS to reveal the properties of the ore-forming fluids. This analysis provides the necessary data support and a basis for evaluation.

[0025] S5: Tectonic-magmatic-ore-forming coupling research, ① Tectonic evolution simulation: Combined with the regional tectonic evolution history, analyze the spatiotemporal relationship between rock emplacement and mineralization; ② Fluid inclusion research: Use microthermometry and laser Raman spectroscopy to analyze fluid inclusions and explore the source and evolution of mineralizing fluids.

[0026] S6: Mineralization model and resource evaluation, which is carried out in three steps: ① Analogy study: Compare the mineralization mechanisms of typical nickel deposits such as Jinchuan and Kalatongke to establish a nickel-cobalt mineralization model in the region; ② 3D geological modeling: integrating geological and geophysical data to identify favorable areas for deep concealed ore bodies; ③ Delineate target areas: Delineate prospecting target areas, put forward exploration suggestions, and form an evaluation and prediction indicator system.

[0027] This application provides a new method for analyzing and evaluating the nickel-cobalt mineralization of ultramafic rocks, which can further narrow the scope of the mining area, reduce working hours, reduce large-scale manual field surveys, save time and manpower, and construct corresponding three-dimensional geological modeling to facilitate the delineation of target areas, provide reasonable suggestions for the final exploration, and form an evaluation and prediction index system, thereby making up for the shortcomings of the existing technology.

[0028] Finally, it should be noted that, in this document, relationships such as first and second, etc., are used solely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms include, comprise, or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0030] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A method for analyzing and evaluating the mineralization of nickel and cobalt in ultramafic rocks, characterized in that: The following steps are involved: S1: data collection and comprehensive analysis; S2: Hyperspectral remote sensing interpretation; S3: Field geological survey; S4: Rock geochemistry and isotope analysis; S5: Tectonic-magmatic-metallogenic coupling research; S6: Mineralization model and resource evaluation.

2. The method for analyzing and evaluating the nickel-cobalt mineralization of ultrabasic rocks according to claim 1, wherein: In step S1, geological data and historical data are collected in the area to be evaluated, and the spatiotemporal distribution and petrological characteristics of basic and ultrabasic rocks are determined based on the collected data, and the petrographic classification and magma evolution sequence of the rock mass are established.

3. The method for analyzing and evaluating the nickel-cobalt mineralization of ultrabasic rocks according to claim 1, wherein: In step S2, hyperspectral remote sensing interpretation is carried out in the study area, focusing on interpreting hidden faults and rock masses that are difficult to detect by traditional means.

4. The method for analyzing and evaluating the nickel-cobalt mineralization of ultrabasic rocks according to claim 1, wherein: In step S3, the following three steps are performed: ① Rock mass mapping: Conduct 1:50,000 special geological mapping in the study area, focusing on tracking the distribution, contact relationship and alteration characteristics of major basic and ultrabasic rocks; ② Mineralized outcrop research: systematically collect mineralized outcrops, cores, and surrounding rock samples to record the mineralization type and spatial distribution; ③ Structural analysis: measure the occurrence of joints and faults, and analyze the control of structure on magma intrusion and mineral fluid migration.

5. The method for analyzing and evaluating the nickel-cobalt mineralization of ultrabasic rocks according to claim 1, wherein: In the step S4, the following three methods are used: ① Major and trace elements: X-ray fluorescence spectroscopy and inductively coupled plasma mass spectrometry are used to analyze the chemical composition of rocks and identify the rock type and diagenetic environment; ② Isotope dating: The zircon U-Pb method is used to determine the age of rock formation, and the Re-Os method is used to determine the age of sulfide mineralization, thus establishing a rock-forming-metallogenic time series; ③Sulfide mineralogy: Analyze the composition of sulfides through electron probe and laser ablation-ICP-MS to reveal the properties of mineralizing fluids.

6. The method for analyzing and evaluating the nickel-cobalt mineralization of ultrabasic rocks according to claim 1, wherein: In step S5, ① structural evolution simulation: combining the regional structural evolution history to analyze the spatiotemporal relationship between rock emplacement and mineralization; ② fluid inclusion research: using microthermometry and laser Raman spectroscopy to analyze fluid inclusions and explore the source and evolution of mineralizing fluids.

7. The method for analyzing and evaluating the nickel-cobalt mineralization of ultrabasic rocks according to claim 1, wherein: In step S6, the following three steps are used: ① Analogy study: Compare the mineralization mechanisms of typical nickel deposits such as Jinchuan and Kalatongke to establish a nickel-cobalt mineralization model in the region; ② 3D geological modeling: integrating geological and geophysical data to identify favorable areas for deep concealed ore bodies; ③ Delineate target areas: Delineate prospecting target areas, put forward exploration suggestions, and form an evaluation and prediction indicator system.

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