China University of Geosciences (wuhan)

Tibet Julong Copper Co., Ltd.

Zijin Mining Group Co., Ltd.

Xiaojia Jiang

Xin Chen

Youye Zheng

Jiangang Wei

Zhuoga Suolang

Jingjing Li

Defu Shu

Shucun Wang

Daohu Lin

Xiaodan Lai

Xu Kang

Jinzhang Zhang

Rongzhu Guan

Feng Gao

Changshun Jia

Shouhong Lin

In a method for in-situ U-Pb dating of heterogeneous minerals, a target mineral is separated and purified by carrying out data analysis, extraction and enhancement on original mapping data. The method highlights distribution features of dating indexes (U content, Pb content, Pb/Uratio, Pb/Uratio and Th/U ratio) in a target mineral phase with a noise data processing technology, and more intuitively displays a favorable dating portion and a crystal growth change trend of the dating mineral. Further, a fine spot design is provided for high-precision dating analysis in a later stage. A plurality of geological events experienced by a heterogeneous mineral crystal in a growth process is accurately limited, so as to invert the mineral formation history which provides the basis for better study of mineralogy, mineral geochemistry and mineral geochronology. It is hence a novel indispensable auxiliary means of mineral geochronology and an auxiliary method for mineral exploration.

Method for in-situ U-Pb dating of heterogeneous minerals

A method for determining a direction and a distance of a metallogenic pluton of a skarn deposit with a garnet includes: collecting a sample; performing petrographic observation on the sample and designing an experimental area; computing a parameter; building a model; setting a parameter range; optimizing the parameters of the three models through a grid search method, and determining an optimal model and corresponding parameters a', b and c through repeated circulative iteration and by taking a minimum R as a limit condition; and substituting data of all sampling points into the optimal model, computing D of each sampling point, drawing a circle with a corresponding sampling point as a center and D as the radius, determining an intersection point of all circles as coordinates of the metallogenic pluton, and performing delineation with R as a buffer area of the metallogenic pluton.

Method for determining direction and distance of metallogenic pluton of skarn deposit with garnet

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Wuhan, China

Xiaojia Jiang