豫西合峪—车村地区萤石矿床地质特征及物质来源研究进展

doi:10.11720/wtyht.2022.1438

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Abstract

Based on the data on the geology, minerals, exploration, and geochemistry of more than 30 fluorite deposits in the Heyu-Checun area, western Henan Province, this study summarized the types, spatial distribution, and geochemical characteristics of fluorite deposits in the area and explored the genesis and material sources of the deposits. The fluorite deposits in this area have simple types and are distributed in Yanshanian granites and along the fault zone of the external contact zone of the granites. The formation ages of the Heyu and Taishanmiao plutons are 124.7~148.2 Ma and 115~123.1 Ma, respectively. The mineralized age of fluorites is 120~126.8 Ma, indicating that the mineralization occurred in the late stage of the intrusion of the Heyu pluton and the early stage of the intrusion of the Taishanmiao pluton. The ore-forming fluids belong to the NaCl-H₂O system with a medium-low temperature, a low salinity, and a low density, indicating that the deposits in the area are medium-low-temperature supergene hydrothermal fluorite deposits. The chondrite-normalized REE patterns of fluorites in the area can be divided into slightly leftward, flat, and rightward types dominated by the rightward type. Moreover, the rightward chondrite-normalized REE patterns of fluorites are similar to those of the Yanshanian granites, both showing strongly negative Eu anomalies and weakly negative Ce anomalies. This finding indicates that the Yanshanian granites provide materials for the formation of fluorites. The metallogenic element F may mainly originate from the Heyu and Taishanmiao plutons, while the metallogenic element Ca partly comes from granites as surrounding rocks.

Key words： geological characteristics material sources fluorite Heyu-Checun

Received: 09 August 2021 Published: 17 August 2022

ZTFLH:	P595
	P597.3

Corresponding Authors: BAI De-Sheng E-mail: dkeyzkt@163.com;baidh1968@163.com

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	Articles by authors
	Kai-Tao ZHANG
	De-Sheng BAI
	Jun-Sheng Li
	Ji-Feng LIU
	Dong XU
	Yang-Yan SU
	Kang FAN

Cite this article:

Kai-Tao ZHANG,De-Sheng BAI,Jun-Sheng Li, et al. Research progress in the geological characteristics and material sources of fluorite deposits in the Heyu-Checun area, western Henan Province[J]. Geophysical and Geochemical Exploration, 2022, 46(4): 787-797.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2022.1438 OR https://www.wutanyuhuatan.com/EN/Y2022/V46/I4/787

Regional geological map of Heyu-Checun area fluorite deposit

Distribution mapof fluorite deposits in Heyu-Checun area

Thelist of fluorite deposits in Heyu-Checun area

Age determination statistics of Heyu pluton

Estimation table of metallogenic pressure and metallogenic depth of fluorite deposits in Heyu-Checun area

Normalized REE distribution pattern of Heyu granite

Normalized REE distribution pattern of Taishanmiao granite

Normalized REE distribution pattern of fluoritein Heyu-Checun area

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