Metallogenesis of W (Sn) Deposits and Their Exploration in Nanling Range, China
详细信息
- 责任者：Fu Jianming (Wuhan Center ; Chinese Geological Survey ; Wuhan 430205 ; China) ; Ma Liyan
- 刊名：Geological Journal of China Universities
- 出版年：2013
- 卷期：19(2)
- 关键词：锡矿 ; tin ores ; 钨矿 ; tungsten ores ; 南岭 ; Nanling Mountains
- 页码：p.202-212
- 图表：illus., 4 tables, 43 refs.
- 分类号：1003
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
Yanshanian granitoids in Nanling Range can be subdivided into three genetic categories: crust remelting type(C-type),crust-mantle derived magmatic mixing type(H-type) and aluminous A-type granites in this paper.The later two types are closely related with primary tin deposits which can be subdivided into greisen,altered granite,skarn,quartz vein,altered fracture zone and porphyry type.Deposits and occurrences in this area are dominantly distributed along the ancient plate suture,juncture of large-scale uplift and sag and deep faults and mainly gather in one metallogenic belt and six metallogenetic areas.One belt is NE-trending Xitian-Qitianling-Jiuyishan-Huashan-Guposhan Sn-W polymetallic belt and six Sn(and/or W) polymetallic areas are Kangjiawan-Dayishan regions,Dupangling,northern Guangdong-southern Jiangxi,eastern Hunan-western Jiangxi,NandanHechi,Jiuwandashan respectively.Former geochronological researches show that granite-related mineralization in this area took place from Greenvillian to late Yanshanlian with a peak of 150~160Ma.Based on regional metallogenic characteristics in Nanling Range,11 prospecting targets are chosen for further exploration.A key attention should be paid to the following aspects in future ore exploration:(1) deep and periphery of old mines;(2) prospecting into batholith;(3) prospecting in concealed granite distribution area;(4) exploration in convergence zones of regional faults in different directions;(5) searching for altered fracture zone-type(bottomed conglomerate-type) Sn-W deposit along unconformity between Cambrian and Devonian and(6) altered fracture zone-type Sn-W deposit away from the granitic rock.
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