普弄巴金矿床黄铁矿的标型特征

笔者对本地区金矿床中黄铁矿的晶体结构形态、物理性质、微量元素及同位素进行了研究，结果表明：黄铁矿晶形呈五角十二面体，八面体－五角十二面体、立方体－五角十二面体聚晶富Ａｕ；黄铁矿的晶胞参数（ａ）、热电系数（α）与砷、金关系密切，基本上成正相关关系；黄铁矿质变热电系数的测定表明本区金矿床为中低温矿床；本区金矿床中的黄铁矿多数为空穴型，据其空间分布特征，认为本区金矿床深部可能有一定勘探远景；同位素研究表

TYPOMORPHIC CHARACTERISTICS OF PYRITE IN THE PUNONGBA GOLD DEPOSIT

Pyrite,as a common associated, mineral which bears genetic and prospecting information on gold deposits,is an important typomorphic mineral. The authors examined pyrite from the gold deposit, including its Crystal form, structure, physical properties, trace e1ements and isotopes. Some investigations illustrate that glomerocrysts of pyrite occur as pyritohedra,octahedral-pyritohedra,cubic-pyritohedra rich in gold. The a and a values of -pyrite are related to arsenic and gold. Measurements of pyroelectricity of pyrite demonstrate that the mineralizing temperature of the gold deposit is low-moderate. Pyrites in gold orebodies are mostly of the nest type,and their spatial distribution indicates that the deeper levels of the gold deposit may be prospective. The isotope data indicate that the source of the gold deposit is mainly the Triassic sandy-pelitic rocks. In addition investigations were made of the source of ore-forming material and ore deposits to provide new clues to exploration and development.