陈欣,熊建,孙会饶,黄超.赣东北福泉山地区钨矿控矿因素分析及其找矿意义[J].地质找矿论丛,2024,39(2):192-199
赣东北福泉山地区钨矿控矿因素分析及其找矿意义
Analysis on tungsten ore-control factors and the prospecting significance to Fuquanshan area in northeast Jiangxi province
投稿时间:2023-09-05  
DOI:10.6053/j.issn.1001-1412.2024.02.007
中文关键词:  矽卡岩型钨矿  白钨矿  控矿因素  找矿预测  福泉山地区  赣东北
英文关键词:Skarn type tungsten deposit  sheelite  ore-control factor  prospecting prediction  Fuquanshan area  the northeast Jiangxi province
基金项目:
作者单位
陈欣 核工业二七〇研究所, 南昌 330200 
熊建 核工业二七〇研究所, 南昌 330200 
孙会饶 核工业二七〇研究所, 南昌 330200 
黄超 核工业二七〇研究所, 南昌 330200 
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中文摘要:
      福泉山钨矿位于赣东北深大断裂北西侧,矿体产在黄龙组与双桥山群不整合面矽卡岩带中。通过野外调查,借鉴对比朱溪钨铜矿成矿特征,对矿床控矿因素进行了研究。研究认为,石炭系不纯灰岩组合是矿床成矿有利围岩,黄龙组与双桥山群不整合面附近发育的层间裂隙是主要容矿构造,燕山期岩浆作用为成矿提供热源和成矿流体;矿体围岩蚀变具明显分带特征,由浅至深依次为:蛇纹石化白云质大理岩带→透闪石化矽卡岩带→透辉石化角岩带→角岩带,矿化集中在透闪石矽卡岩带中;钨矿床系花岗岩岩浆热液交代大理岩形成的远矽卡岩型白钨矿。基于区内控矿要素及成矿特征推测,福泉山东南的源头一带为有利找矿靶区;通过对源头勘查在深部新发现了钨矿体,取得较大找矿进展,深部灰岩与花岗岩体接触界线是福泉山地区钨矿找矿重要突破口。
英文摘要:
      Fuquangshan tungsten deposit is located on the Northwest side of big and deep fault in northeast Jiangxi province. Tungsten ore bodies occur in skarn zones on unconformity surface between Huanglong formation and Shuangqiaoshan Group. Based on field investigation and comparison of metallogenic characteristics of tungsten deposits in Fuquanshan area and those of W-Cu deposits in Zhuxi area ore-control factors of the former area is studied. The carboniferous impure limestone association is favorite wall rock of. The Deposit is hosted in the interformational fissure at the above mentioned unconformity surface. The Yanshanian magmatism supply metallogenic heat and hydrothermal fluid sources. Wall rock alteration zoning can be clearly seen from shallow to depth in sequence: serpentinized dolomitic marble zone-Tremolite skarn zone-Diopsite horn fell zone-born fell zone. Mineralization is developed in the skarn zone. The tungsten deposit is distal skarn type sheelite deposit formed by granitic magma hydrothermal fluid-marble metasomatism. It is inferred on basis of the ore-control factors and metallogenic characteristics analysis that Yuantou area in the southeast Fuquanshan area should be the prospecting target. Tungsten ore body encountered at depth of Yuantou area shows that breakthrough would be made at contact boundary between the deep limestone and granitic body.
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