西藏中拉萨地体中段鑫龙金矿矿床地质特征及找矿潜力浅析

doi:10.19388/j.zgdzdc.2024.300

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Abstract Xinlong gold deposit in Middle Lhasa block of Tibet has great prospecting potential. Through mineral geological survey and preliminary drilling verification, three ore bodies were delineated, which are controlled by the NNW and NNW fault structures. These three ore bodies exist in rhyolitic breccia lava, and the Au-II gold belt are 300~1 000 m long and up to 10 m thick, with single engineering grade of 17.97g/t. It is predicted that the ore body of Xinlong gold deposit can reach large scale, and the whole mining area is expected to reach super large scale. The output of gold is divided into two types, that is galena + arsenonickel + gold combination and pyrite+ quartz + gold combination. The alteration in the mining area is mainly dominated by silicification and medium to high grade argillation. According to the characteristics of mineralization and alteration, it is considered that Xinlong gold deposit is a high sulfide epigenetic type gold deposit, which is the first gold deposit of this type in continental volcanic rocks in Tibet. According to the comprehensive geological analysis, there is a complete porphyry-epithermal type Cu-Au metallogenic system in Xinlong-Langmeila area, which has great prospecting potential. The discovery of Xinlong gold deposit could open up a new direction for the exploration in the northern Tibet gold deposit.

Key words： Xinlong gold deposit epithermal type gold deposit metallogenic system Middle Lhasa block

Received: 04 September 2024

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	Articles by authors
	DI Mengxiang
	CHEN Wei
	ZHAI Degao
	LIU Qingping
	YU Jiajia
	WANG Yankai
	LUO Long
	WU Wenxian
	BAI Chao

Cite this article:

DI Mengxiang,CHEN Wei,ZHAI Degao, et al. Geological characteristics and prospecting potential of Xinlong gold deposit in the central section of Middle Lhasa block of Tibet[J]. , 2024, 11(5): 21-28.

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http://journal25.magtechjournal.com/Jwk_dzdc/EN/10.19388/j.zgdzdc.2024.300 OR http://journal25.magtechjournal.com/Jwk_dzdc/EN/Y2024/V11/I5/21

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