Geological Characteristics and Prospecting Potential of Leiwu Tungsten Polymetallic Deposit in Dayu County,Jiangxi Province
谢刚 1漆富勇 1邹振威1
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作者信息
1. 江西省地质局第七地质大队,江西 赣州 341000
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摘要
天门山—红桃岭矿田是江西南部重要的黑钨矿矿集区,矿田位于南岭 EW 向复杂构造带东段,矿床多受 NNE 向构造控制.大余雷屋钨多金属矿床位于红桃岭岩体外围南侧,是近年在牛岭钨多金属矿外围勘查过程中新发现的一处具有中型远景规模的石英脉型钨多金属矿.晚侏罗世中细粒黑云母花岗岩是该矿床成矿岩体,岩石具有高硅钾、贫钙、钨锡钼等成矿元素含量高等特征.矿床成因类型为岩浆期后高温热液裂隙充填石英脉型钨多金属矿床,矿脉近东西向成组出现,呈"右行-斜列"组合形式.主矿体11条,矿体平均厚度0.77 m,最大厚度1.72 m;平均品位三氧化钨2.03%、锡0.33%,最高品位三氧化钨10.00%、锡1.29%.最新勘查成果表明,主矿带北侧的Ⅱ号、Ⅲ号矿带,西侧的Ⅳ号矿带,以及南侧外围具有较好的找矿前景.
Abstract
Tianmenshan-Hongtaoling ore field is an important wolframite ore concentration area in southern Jiangxi Province.The ore field is located in the east of the Nanling Mountain EW trending complex structural belt,and the deposit is mostly controlled by NNE structures.The Leiwu tungsten polymetallic deposit,which is a newly developed quartz-vein type tungsten polymetallic deposit with a medium scale prospect during the exploration process of the Niuling tungsten polymetallic deposit in recent years,is located in the south of the periphery of the hongtaoling rock mass.The late Jurassic medium fine grained biotite granite is the ore-forming rock mass of the deposit,which is characterized by high content of silicon and potassium,poor calcium,tungsten,tin and molybdenum and other ore-forming elements.The genesis type is a post magmatic hydrothermal fissure filled quartz-vein type tungsten polymetallic deposit.The ore veins appear in groups in a nearly east-west direction,being in a"right row oblique"combination form.There are 11 main ore bodies,with an average thickness of 0.77 m and a maximum thickness of 1.72 m.The average grade of tungsten trioxide is 2.03％and that of tin is 33％.The highest grade of tungsten trioxide is 10.00％and that of tin is 1.29％.The latest exploration results indicate that the Ⅱ and Ⅲ ore belting to the north of the main ore belt,the Ⅳ ore belting to the west of the main ore belt,and the southern out-ring of the main ore belt have good prospecting potential.
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