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A Large-Scale Altered Lithofacies Location Prediction Method for Hydrothermal Ore Deposits

A scale and alteration technology, applied in special data processing applications, instruments, electrical digital data processing, etc., to achieve strong operability, low work cost, and simple methods

Active Publication Date: 2017-01-04
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for non-magmatic hydrothermal deposits that are obviously controlled by structures, such as reformed deposits and metamorphic hydrothermal deposits, there has not been a large-scale positioning and prediction of altered lithofacies prospecting methods for such deposits in depth.

Method used

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  • A Large-Scale Altered Lithofacies Location Prediction Method for Hydrothermal Ore Deposits
  • A Large-Scale Altered Lithofacies Location Prediction Method for Hydrothermal Ore Deposits
  • A Large-Scale Altered Lithofacies Location Prediction Method for Hydrothermal Ore Deposits

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: Deep location prospecting prediction of a lead-zinc deposit in northeastern Yunnan

[0040] 1. Work background

[0041] A lead-zinc deposit in northeastern Yunnan is one of the main mines in my country's lead-zinc industrial base. However, due to decades of development, the mine's mineral resources are in a difficult situation of severe crisis or even exhaustion. There are three major problems in prospecting in this area: it is located in the high-cold and high-altitude area, with steep mountains and complex topography; the difficulty of understanding is obviously increased, and the mineralization law of the deposit is unclear; the prospecting and prediction are very difficult, and conventional methods are difficult to work. TEM and IP geophysical prospecting methods are often used in the prospecting of such deposits, but the resistivity and high polarizability anomalies obtained by these geophysical prospecting methods are highly multi-solvable, and the water-bea...

Embodiment 2

[0061] Example 2: Deep location prospecting prediction of a copper deposit in the Kangdian Earth Axis

[0062] 1. Geological background

[0063] The piercing structure is a typical and common special ore-controlling structure on the Kangdian axis, which controls a series of large and medium-sized copper deposits. The deposit is one of the large copper deposits strictly controlled by the piercing structure. The mining area is located on the west side of the rift basin in the middle section of the Proterozoic Kunyang Rift between the Lvzhijiang deep fault and the Xiaojiang fault. The ore bodies are vein-shaped, sac-shaped, nest-shaped, columnar and irregular, and occur in spines. In the strong silicified dolomite of the Lvzhijiang Formation of the Kunyang Group of the Mesoproterozoic across the structure and its surroundings.

[0064] After decades of development, the mine has exhausted its mineral resources. Therefore, how to predict the location of concealed mines in and around th...

Embodiment 3

[0084] Example 3: Deep location prospecting prediction of a copper-lead-zinc deposit in southwestern Sichuan

[0085] 1. Brief introduction of geological background

[0086] A certain deposit is a large-scale structural hydrothermal copper-lead-zinc deposit in southwestern Sichuan, which is obviously controlled by compressive torsional fractures. The host rock is Lower Carboniferous dolomitized medium coarse-grained dolomite. In addition to lead and zinc in the ore, copper is Some sections can independently delineate industrial ore bodies. The hydrothermal alterations such as iron dolomitization, pyrite mineralization and calciteization are intense and developed, and their characteristics are similar to those of Example 1, which provides favorable conditions for the application of the altered lithofacies location prediction method.

[0087] 2. The specific implementation process of the method of the present invention is as follows:

[0088] (1) The ore-forming structure analysis and ...

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Abstract

The invention discloses a large-scale altered lithofacies location prediction method for hydrothermal deposits, which consists of three stages of work including fine analysis of ore-forming structures, altered lithofacies mapping, altered lithofacies zoning and concealed ore location prediction program, to predict the direct location of deep deposits or ore bodies. This method solves the problem that the conventional physical and chemical prospecting method is difficult to predict deep hidden ore bodies due to the strong anomaly multi-solution and the difficulty in positioning in the whole space domain.

Description

Technical field [0001] The invention relates to a method for positioning and predicting large-scale concealed mineral deposits, in particular to a method for positioning and predicting large-scale altered lithofacies of hydrothermal deposits, which belongs to the field of mineral resource exploration. Background technique [0002] Deep prospecting positioning prediction is the current scientific frontier of mineralization and metallogenic prediction and one of the main problems in the field of mineral deposit exploration, and it is also the main direction and trend of future mineral exploration. Traditional geophysical and geochemical prospecting methods mainly use the differences in physical property parameters and element contents of surrounding rock and ore to indirectly infer whether there are hidden deposits or ore bodies in the deep. The effect of deep prospecting prediction is often counterproductive due to abnormal diversification and strong electromagnetic interference. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 韩润生
Owner KUNMING UNIV OF SCI & TECH
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