Determination method for vertical zoning sequence of geochemical elements of ore deposit
A technology of geochemical elements and determination methods, which is applied in the field of determining the vertical zoning sequence of geochemical elements in deposits, can solve the problems of large variability in mineralization intensity, great differences, and inability to calculate, and achieves averaged content and coefficient of variation. Simple, easy to calculate, and the effect of a wide range of applications
Inactive Publication Date: 2021-07-23
XICHANG COLLEGE
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[0005] The present invention aims to provide a method for determining the vertical zoning sequence of geochemical elements in ore deposits, so as to solve the problem of ore deposits with great variability in mineralization intensity, and the contents of each element in different spatial positions are not in the same order of magnitude and have great differences. There are certain difficulties in the calculation process of the Gelian sub-band index method, and there may even be extreme cases where the denominator is zero and cannot be calculated
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[0043] see figure 1 , the present embodiment proposes a method for determining the vertical zoning sequence of ore deposit geochemical elements, comprising the following steps:
[0044] S1: For all elements participating in the calculation, calculate the i-th element at a certain elevation H j The sum of the abnormal contents of the elements, denoted as C ij ;
[0045] S2: Calculate the average value M of the element anomaly content of the i-th element at all elevations i ;
[0046] S3: According to C ij and M i Find the averaged content CA of the i-th element on all elevations i , the calculation formula is:
[0047] CA i =C ij / M i (Formula 1)
[0048] According to M i and S i Calculate the coefficient of variation CV of the i-th element at all elevations i , where S i is the standard deviation of the i-th element on all elevations, and the calculation formula is:
[0049] cv i = M i / S i (Formula 2)
[0050] S4: According to CA i and CV i Calculate t...
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The invention relates to the technical field of ore deposit geochemistry, aims to solve the problems that a Grigobi zoning index method in the prior art has certain difficulty in the calculation process and is limited in application range, and provides a determination method for a vertical zoning sequence of geochemical elements of an ore deposit. The method includes: calculating a zoning index of each element in each elevation according to the averaged content and the variable coefficient of each element on all elevations, finding out the element with the maximum zoning index in each elevation, and arranging the elements according to the order of the elevations to obtain a vertical zoning sequence of the elements. The method has the beneficial effects that the application range is wide, the method is still applicable to ore deposits with great mineralization intensity variability and great difference in content of each element in different spatial positions, the vertical zoning sequence of the geochemical elements can be simply, conveniently and quickly determined, a basis is provided for searching deep concealed minerals, and the method has important practical significance for accurately evaluating the deep mineralization potential.
Description
technical field [0001] The invention relates to the technical field of ore deposit geochemistry, in particular to a method for determining the vertical zoning sequence of ore deposit geochemical elements. Background technique [0002] The vertical zoning sequence of geochemical elements reflects the distribution of elements during the enrichment process of ore-bearing hydrothermal fluids, and has a good indication for searching for hidden mineral deposits in the deep. [0003] The currently widely used method of element zoning sequence is the Grigorian zoning index method. When this method converts the original data, there are many controversies because the element data of different orders of magnitude are artificially processed into the same order of magnitude. At the same time, for deposits where the mineralization intensity varies greatly, and the contents of each element in different spatial positions are not in the same order of magnitude and have great disparity, the ...
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IPC IPC(8): G01V9/00
CPCG01V9/00
Inventor 柯丹张万明李立娜姚昆代飞吴玮
Owner XICHANG COLLEGE