元阳大坪金矿床石英的标型特征及其地质意义

Geology and Typomorphic Peculiarties of Quartz in Daping Gold Deposit of Yuanyang

笔者从形态、晶胞参数、化学成分、包裹体和物理物质(热发光、红外吸收光谱)及氢氧同位素组成等诸方面对元阳大坪金矿床中含金和不含金石英的标型特征进行了详细地分析对比,结果表明:两类石英的标型特征存在明显的差别;该矿床属混合热液成因;含金石英的特征组合是从事成矿预测和矿点综合评价的有效标志,为矿床将成为大型金矿床提供了可靠的理论依据.

In this paper,the typomorphic peculiarties of quartz in Daping gold deposit have been studied in form.unit cell paramter,chemical composition,inclusion and physical properties(infrared absorptino spectrum and thermoluminescence properties),etc.These are helpful to the discussion of mixed hydrothermal genesis of deposit.It is indicated that the combination of the peculiarties is one of the characteristies for metallogenic forcast and evaluation of mineral spots.and it is shown that Daping gold deposit will turn into one of the large-sale deposits.