茅排金矿床中自然金和黄铁矿的成因矿物学特征  

Minerageny of Native Gold and Pyrite in the Maopai Gold Deposit,Jiangxi Province

作　　者：徐海江[1] 张凤云[1] 赖绍聪[2] 

机构地区：[1]河北地质学院,石家庄050031 [2]中国地质大学,北京100083

出　　处：《岩石矿物学杂志》1993年第4期363-370,共8页Acta Petrologica et Mineralogica

摘　　要：作者通过对新发现的茅排金矿的研究,测试了自然金、黄铁矿的物理性质、化学成分等,并论述了成因矿物学特征。文中指出自然金、黄铁矿在矿体垂向上晶体形态的分布规律,利用形态系数计算公式可判断矿体、矿带的延伸方向和剥蚀程度。并指出,明金常见,自然金成色高,矿石中贫硫化物,黄铁矿中金品位高、Sb、Hg极低、无As,Co/Ni比较稳定、晶胞参数和红外吸收峰偏大等是“茅排式”金矿床的特点。Based on the determination of physical properties and chemical composi-tion of native gold and pyrite from the newly--discovered Maopai gold depo-sit, the present paper deals with minerageny of native gold and pyrite. Vari-ous crystal forms of gold and pyrite could be observed along the vertical sec-tion of the orebody, and the formula for morphologic parameters might beused to judge the downward extension and the denudation degree of the ore-body and the ore belt. The 'Maopai--type' gold deposit has some unique cha-racteristics: ores are rich in gold. and poor in sulfides; pyrite contains highgold (>200 g/t), very low Sb and Hg and no As, and has fairly stable Co/Niratios, somewhat large cell parameter a? and high infrared absorption peak.

关 键 词：金矿床 自然金 黄铁矿 成因 矿物学 

分 类 号：P618.510.4[天文地球—矿床学]