黄金科学技术
黃金科學技術
황금과학기술
Gold Science and Technology
2015年
5期
35-40
,共6页
地质特征%矿体赋存规律%找矿标志%白竹坪金矿%湖南省
地質特徵%礦體賦存規律%找礦標誌%白竹坪金礦%湖南省
지질특정%광체부존규률%조광표지%백죽평금광%호남성
geological characteristics%ore occurrence law%prospecting marks%Baizhuping gold deposit%Hunan Province
白竹坪金矿位于湘中白马山—龙山 EW 向穹窿构造带西段。矿床赋矿地层主要为高涧群天井组和震旦系江口群长滩组，目前已发现矿脉7条，严格受断裂破碎带控制。矿石中 Au 元素主要以自然金的形式存在，少量显微金以机械混入物或微包裹体形式赋存在黄铁矿、毒砂和黄铜矿等矿物中。围岩蚀变以硅化和黄铁矿化为主，其次为毒砂化、黄铜矿化、绿泥石化、绢云母化和粘土化等，常具有一定的分带现象。通过研究白竹坪金矿地质特征与矿体空间分布变化规律，提出了在白马山地区寻找类似金矿床的综合找矿标志。
白竹坪金礦位于湘中白馬山—龍山 EW 嚮穹窿構造帶西段。礦床賦礦地層主要為高澗群天井組和震旦繫江口群長灘組，目前已髮現礦脈7條，嚴格受斷裂破碎帶控製。礦石中 Au 元素主要以自然金的形式存在，少量顯微金以機械混入物或微包裹體形式賦存在黃鐵礦、毒砂和黃銅礦等礦物中。圍巖蝕變以硅化和黃鐵礦化為主，其次為毒砂化、黃銅礦化、綠泥石化、絹雲母化和粘土化等，常具有一定的分帶現象。通過研究白竹坪金礦地質特徵與礦體空間分佈變化規律，提齣瞭在白馬山地區尋找類似金礦床的綜閤找礦標誌。
백죽평금광위우상중백마산—룡산 EW 향궁륭구조대서단。광상부광지층주요위고간군천정조화진단계강구군장탄조，목전이발현광맥7조，엄격수단렬파쇄대공제。광석중 Au 원소주요이자연금적형식존재，소량현미금이궤계혼입물혹미포과체형식부존재황철광、독사화황동광등광물중。위암식변이규화화황철광화위주，기차위독사화、황동광화、록니석화、견운모화화점토화등，상구유일정적분대현상。통과연구백죽평금광지질특정여광체공간분포변화규률，제출료재백마산지구심조유사금광상적종합조광표지。
Baizhuping gold deposit is located in the west of Baimashan-Longshan uplift belt in central Hunan Province.Ore formation of the deposits are Gaojian Group Tianjing Formation,Sinian Jiangkou Group Changtan set.7 ore-veins which strictly controlled by the fracture zone has been found in the deposit.Gold elements of gold ore mainly exists in the form of native gold.A small amount of microscopic gold in the form of machinery foreign substance or micro-inclusions existed in minerals such as pyrite,arsenopyrite and chalcopyrite.Wall rock alteration is given priority to with silicification,pyritization,times of arsenopyrite,chalcopyrite,chloritization, and sericitization,clay and so on.Wall rock alteration has the phenomenon of zoning.Based on the studies of Baizhuping gold mine geological characteristics,mineralization enrichment regularity of gold deposits,etc.,the ore-prospecting marks were summarized.
