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Hydrocarbon-rich reductive ore-forming fluid determination method

A determination method and metallogenic technology, applied in the field of determination of hydrocarbon-rich reducing ore-forming fluids, can solve the problems of restricting the exploration and development of sandstone-type copper deposits and ore prospecting breakthroughs, and improve the enrichment positioning ability and high recognizability. Effect

Pending Publication Date: 2019-06-11
有色金属矿产地质调查中心
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Problems solved by technology

Research on uncorrelated methods for the determination of metal minerals and hydrocarbon-rich reducing fluids in ore-forming, restricting the exploration and development of sandstone-type copper deposits and breakthroughs in ore prospecting

Method used

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  • Hydrocarbon-rich reductive ore-forming fluid determination method

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] In conjunction with the accompanying drawings, a method for determining a hydrocarbon-rich reducing ore-forming fluid is characterized in that it specifically includes the following steps:

[0013] 1) Determine the main source rock series through the petrographic characteristics of sedimentary rocks, and use the vitrinite reflectance to record the highest paleogeotemperature experienced by the sedimentary strata and the threshold of hydrocarbon generation and expulsion;

[0014] 2) Determine the material sources of hydrocarbon-rich reducing ore-forming fluids and source rocks through the determination of total organic carbon, and use copper-rich mineral fluid inclusions to determine the evolution trend of reducing ore-forming fluid components;

[0015] 3) Hydrocarbon-rich strongly reducing ore-forming fluid is used as a reducing agent to reduce the oxi...

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Abstract

The invention relates to a hydrocarbon-rich reductive ore-forming fluid determination method. The hydrocarbon-rich reductive ore-forming fluid determination method specifically comprises the followingsteps of (1) determining a main hydrocarbon source rock series according to petrography characteristics of sedimentary rock; (2) determining matter sources of hydrocarbon-rich reductive ore-forming fluid and a hydrocarbon source rock area by determining total organic carbon; and (3) massively reducing oxidized copper formed by an initial concentration effect in copper-containing amaranthine anagenite by using hydrocarbon-rich reductive ore-forming fluid as an important reduction agent to form chalcocite precipitates. The hydrocarbon-rich reductive ore-forming fluid determination method has the following advantages that the identification and delineation of the hydrocarbon-rich reductive ore-forming fluid can be solved, the gathering and positioning capacity of sedimentary ore-forming sandy conglomerate copper-lead-zinc mineral deposits can be effectively improved, and the characteristics of high recognition degree, rapidness and effectiveness can be realized.

Description

technical field [0001] The invention relates to the technical field of copper mine development, in particular to a method for determining a hydrocarbon-rich reducing ore-forming fluid. Background technique [0002] In recent years, the destruction of oil and gas reservoirs and the large-scale metallization of organic matter and sedimentary rock-type copper-lead-zinc deposits have attracted much attention. Organic matter participated in the enrichment and mineralization of copper-lead-zinc deposits. The glutenite-type copper-lead-zinc deposits in the Taxi area are obviously controlled by multiple coupling effects of structural petrography in the syngenetic sedimentary diagenetic period and structural fluid in the ore-forming transformation period. The geochemical petrographic types of the ore-forming fluids are different, which have different control effects on the glutenite-type copper-lead-zinc deposits, and their ore-forming mechanisms are also quite different. The mixing...

Claims

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Application Information

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IPC IPC(8): G01V11/00
Inventor 方维萱王磊贾润幸
Owner 有色金属矿产地质调查中心
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