黄金
黃金
황금
Gold
2015年
9期
24-27
,共4页
魏均启%鲁力%边智虹%吴健%王芳%朱丹%周亮亮
魏均啟%魯力%邊智虹%吳健%王芳%硃丹%週亮亮
위균계%로력%변지홍%오건%왕방%주단%주량량
矿石特征%赋存状态%响水洞金矿床
礦石特徵%賦存狀態%響水洞金礦床
광석특정%부존상태%향수동금광상
ore features%occurrence state%Xiangshuidong Gold Deposit
采用光薄片鉴定、人工重砂分析、化学成分分析、电子探针波谱分析等技术方法,查明了响水洞金矿床矿石类型以石英脉型矿石为主,其中黄铁矿为金的主要载体矿物,黄铜矿、磁黄铁矿为次要载体矿物,石英为主要的脉石矿物,绿泥石和方解石等为次要脉石矿物。矿石的构造类型主要为脉状—细脉状、浸染状、块状、角砾状等。金矿物主要以银金矿形式存在,呈独立矿物形态,粒度主要集中于0.01~0.075 mm。矿石的结构构造有利于各矿物的单体解离,在细磨条件下大部分金矿物解离呈单体金,综合回收率90.84%以上,矿石的性质总体对选矿有利。
採用光薄片鑒定、人工重砂分析、化學成分分析、電子探針波譜分析等技術方法,查明瞭響水洞金礦床礦石類型以石英脈型礦石為主,其中黃鐵礦為金的主要載體礦物,黃銅礦、磁黃鐵礦為次要載體礦物,石英為主要的脈石礦物,綠泥石和方解石等為次要脈石礦物。礦石的構造類型主要為脈狀—細脈狀、浸染狀、塊狀、角礫狀等。金礦物主要以銀金礦形式存在,呈獨立礦物形態,粒度主要集中于0.01~0.075 mm。礦石的結構構造有利于各礦物的單體解離,在細磨條件下大部分金礦物解離呈單體金,綜閤迴收率90.84%以上,礦石的性質總體對選礦有利。
채용광박편감정、인공중사분석、화학성분분석、전자탐침파보분석등기술방법,사명료향수동금광상광석류형이석영맥형광석위주,기중황철광위금적주요재체광물,황동광、자황철광위차요재체광물,석영위주요적맥석광물,록니석화방해석등위차요맥석광물。광석적구조류형주요위맥상—세맥상、침염상、괴상、각력상등。금광물주요이은금광형식존재,정독립광물형태,립도주요집중우0.01~0.075 mm。광석적결구구조유리우각광물적단체해리,재세마조건하대부분금광물해리정단체금,종합회수솔90.84%이상,광석적성질총체대선광유리。
Technical methods of thin sections determination,artificial heavy concentrate analysis,chemical compo-sition analysis and electronic probe spectrum analysis find that the principal gold ore type in Xiangshuidong Gold De-posit is quartz vein. The gold-bearing minerals are dominated by pyrite followed by chalcopyrite and pyrrhotite. Gangue minerals are mainly quartz,and then chlorite and calcite. Ores are in the form of veinlet structures,disseminated struc-tures,massive structures and brecciated structures. Gold minerals are present in an independent mineral form of elec-trum with sizes ranging generally from 0. 010 mm to 0. 075 mm. Ore textures and structures facilitate individual miner-al separation,and most of the gold minerals are likely disintegrated to native gold after finely grinding. The overall re-covery is more than 90. 84 % for ores in this deposit,meaning favorable ore-dressing conditions.