桂西北地区超微粒浸染型金矿标型特征

本文简要论述了桂西北地区超微粒浸染型金矿类型及成因的标型特征，其中包括热液活动方式和期次及热液蚀变，矿体形态、产状、厚度及品位变化，矿石的岩石学、结构构造、矿物组成、化学成分以及金的赋存状态等。同时还介绍了可作为该类型金矿的寻找和评价依据的找矿标型特征，如石英、黄铁矿、毒砂及碳酸盐矿物——标型矿物组合，毒砂——标型矿物，以及主要矿物石英、黄铁矿、毒砂、辉锑矿的各种标型特征。

THE TYPOMORPHIC CHARACTERS OF THE SUPER MICROGRAINED IMPREGNATION─TYPE GOLD DEPOSITS IN NORTHWESTERN GUANGXI

This paper briefly sets out the type and ore─genetic typomorphic characteristics of thesuper micrograined impregnation─type gold deposits in Northwestern Guangxi，which con-sist of the way and times of the hydrothermal activity and alteration，the shape and occur-rence and thickness of orebody and the gold tenor change of ore，petrology and fabric andmineral constitution and chemical composition of ore， and the gold exitence etc. At the sametime, it also introduces the prospecting typomorphic characteristics ，which are regarded as ba-sise of seeking and apprasing the gold deposits ， such as silification ， pyritization ，arsenopyriti-zation， and carbotization───the typomorphic association of mineral，arsenopyrite───thetypomorphic mineral, and various typomorphic characteristics of the quartz, pyrite， arsenopy-rite ， andstibnite.