Method of delineating mineralization center based on short-wave infrared spectrum

An infrared spectroscopy and short-wave technology, which is applied in the direction of material analysis, measuring device and instrument by optical means, can solve the problems of unclear delineation of the hydrothermal center index, insignificant prospecting and exploration effect, and weak regularity, etc. The effect of improving the accuracy rate and ore penetration rate, shortening the period of mineral exploration, and reducing the risk of exploration

Active Publication Date: 2019-10-15
TIBET HUAYU MINING CO LTD
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Problems solved by technology

[0004] However, the current application of short-wave infrared spectroscopy is mostly based on the spectral data itself to delineate the hydrothermal center, which has the following disadvantages: ① due to the phenomenon of multi-stage hydrothermal superposition in the mineralization process, the reasonable delineation of the hydrothermal center is misleading; The impact of landscape areas, different types of deposits, different wall rocks and ore source rocks on the parameters of the short-wave infrared spectrum makes the indicators for delineating the hydrothermal center unclear
Therefore, the current application of short-wave infrared spectroscopy to delineate the hydrothermal mineralization center results are often messy, multi-solution, and the regularity is not strong, and the effect of guiding ore prospecting is not significant

Method used

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  • Method of delineating mineralization center based on short-wave infrared spectrum
  • Method of delineating mineralization center based on short-wave infrared spectrum
  • Method of delineating mineralization center based on short-wave infrared spectrum

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Embodiment 1

[0033] see figure 1 The method for delineating mineralization centers based on short-wave infrared spectroscopy provided by the embodiments of the present invention includes the following steps:

[0034] Step 1. Lithology-alteration special investigation

[0035] When using short-wave infrared spectroscopy to predict ore prospecting, it is the key to ascertain the geological characteristics of the work area, which is the basis for subsequent interpretation of spectral data. Before collecting spectral samples, it is first necessary to carry out special lithology-alteration investigations in the work area, systematically determine key ore-forming geological bodies, lithology boundaries, and alteration boundaries in the work area, and fill in geological maps and alteration zoning maps.

[0036] Step 2. Spectral sample collection

[0037] Utilizing the above-mentioned lithology-alteration special investigation results, reasonable wiring, spectral sample collection should cover t...

Embodiment 2

[0058] see Figure 2-Figure 3 , this embodiment provides the ore prospecting application of short-wave infrared spectroscopy in the Juno mining area, which is realized by the following technical solutions.

[0059] a. Carry out a special geological survey of lithology and alteration in the Juno mining area, and compile geological maps and alteration zoning maps.

[0060] b. Field sample collection:

[0061] According to the lithology-alteration special mapping situation, design the sampling route, properly intensify the sampling points in areas with strong alteration and mineralization, and ensure that the samples have at least 1-2 fresh faces. During the sampling process, record the following information truthfully and in detail:

[0062] sample number X Y H lithology Hand Specimen Alteration mineralization fresh noodles Remark … ZN001 548461 3283167 4945 Granite porphyry Sericization pyritization 3 … ZN002 549170 3283152 52...

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Abstract

The invention discloses a method of delineating a mineralization center based on a short-wave infrared spectrum. According to the method, in the interpreting process of the short-wave infrared spectrum, the influences of different deposit types, different landscapes and different surrounding rocks and source rocks on spectrum parameters are considered, qualitative description of the content of relevant altered minerals in a magmatic-hydrothermal metallogenic system is improved to quantitative interpretation, and the difficulties that accurate recognition is difficult and efficiency is low because rocks are not uniform and alteration is not representative in conventional petrographic identification are overcome. By deeply analyzing the influences of different influence factors on infrared spectrum information, the accuracy and mineral visibility at a delineated hydrothermal center can be greatly improved, the exploration risk is lowered, sample preparation is not needed, test time is short, energy conservation and environment protection are realized, the method is convenient and rapid to use, and the mineral exploration cycle is effectively shortened.

Description

technical field [0001] This application relates to the technical field of mineral exploration and evaluation, in particular to a method for delineating mineralization centers based on short-wave infrared spectroscopy. Background technique [0002] The western region has fragile ecology, high cold and hypoxia, and inconvenient transportation. It is not only difficult to implement traditional exploration methods, but also faces high pressure from environmental protection. The results of ore prospecting and exploration are not ideal. [0003] Short-wave infrared spectroscopy technology has been rapidly promoted in the western mining industry in recent years. It can be used to identify altered mineral types, divide altered mineral assemblage zoning, predict ore-forming target areas, and delineate hydrothermal mineralization centers. For example, the systematic change of characteristic absorption peak wavelengths of chlorite Fe-OH (pos2250) or muscovite Al-OH (pos2200) interprete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3563
CPCG01N21/3563
Inventor 郑有业吴松任欢郑顺利王达
Owner TIBET HUAYU MINING CO LTD
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