烧锅营子金矿黄铁矿的化学成分标型特征

THE COMPOSITION TYPOMORPHIC CHARACTERISTICS OF PYRITE IN SHAOGUOYINGZI GOLD DEPOSIT, JIANPING, LIAONING

摘要: 烧锅营子金矿床的黄铁矿形成于早、中、晚3期,是主要的矿石矿物和载金矿物,其中以中期黄铁矿为最主要的载金者.黄铁矿的化学成分为:TFe43.34%~45.52%,S46.58%~48.86%,与标准黄铁矿相比显示亏铁、亏硫特点.黄铁矿内含丰富的微量元素,有Au、Ag、As、Sb、Bi、Cu、Zn、Pb、Co、Ni、W、Mo、Se等.其中Au、Ag、Cu、Pb、Zn、Bi含量较高,而As、Sb低,Se极低.其Au/Ag(多大于0.5)、(Cu+Pb+Zn)/(Co+Ni+As)(4.26)、Co/Ni(>> 1)比值表明其属中温岩浆热液矿床.

Abstract: Pyrite is the main metallic mineral and carrier of Shaoguoyingzi gold deposit. This paper has systematically studied the generation and composition typomorphic characteristics of pyrite. The results show that the deposit belongs to mesothermal magmatic ore deposit.