菲律宾某尾矿中金的赋存状态

来源期刊：有色金属2011年第1期

论文作者：王玲

文章页码：109 - 113

关键词：工艺矿物学； 尾矿； 赋存状态； 金； MLA

Key words：process mineralogy； mining tailings； occurrence； gold； MLA

摘    要：菲律宾某尾矿库中矿样是金矿全泥氰化的浸渣,含Au0.88g/t,含Ag4.94g/t。在传统显微镜观察及化学物相分析等研究方法基础上,结合矿物自动分析仪MLA查明尾矿库中金的赋存状态。矿样中82.95%的金以自然金、银金矿形式存在,17.05%以碲金矿、碲金银矿形式存在。自然金、银金矿产出粒度一般小于0.125mm,碲金矿、碲金银矿产出粒度均小于0.020mm,金矿物产出特征复杂,主要以硫化矿物包裹体、褐铁矿包裹体、石英及方解石等脉石矿物包裹体形式存在。

Abstract: Balatoc mining tailings is the all-sliming Cyanide Leaching Residue of a Gold Ore in Philippines.The contents of gold and silver are 0.88g/t and 4.94g/t,respectively.Based on the traditional research methods,checking under microscope and chemical phase analysis,MLA(Mineral liberation analyzer) is applied to indicate the gold occurrence in the tailings.The results show that 82.95% Au exists as native gold and electrum,and 17.05% Au exists as calaverite and petzite.The granularity of native gold and electrum is usually less than 0.125mm,while the granularity of calaverite and petzite is usually less than 0.020mm.The forms of the Au minerals are complicated,mainly in the inclusions of the sulfide minerals,limonite,quartz and calcite.