阜新排山楼金矿金的赋存状态

排山楼金矿赋存在蚀变糜棱岩带内,金矿化发生在三类矿石中。矿石组成成分相对简单,有用矿物为自然金和银金矿,金矿物具有成色高、粒度细的特点。其赋存形式有三种,即晶隙金、裂隙金和包体金。晶隙金兼有单体和群体两种,单体金多属中粒金和细粒金。呈不规则粒状,群体金由几粒至几十粒构成,其粒度相对偏小,在群体金附近均有黄铁矿产出。裂隙金主要以长条状、角粒状充填在黄铁矿的裂隙中,包体金则作为黄铁矿、次为黄铜矿的包体金。本矿床金矿石的金矿物以晶隙金、裂隙金为主,包体金次之,这种存在形式的金矿物对于金矿的选冶是有利的。

OCCURRENCE STATE OF GOLD IN PAISHANLOU GOLD DEPOSIT, FUXIN

Paishanlou gold deposit occurred in altered mylonite belt and gold mineralization occurred in the following three types of ores: altered felsic mylonite-type, altered biotite plagioclase mylonite-type and altered mylonited plagioclase amphibolite-type, which the component is relatively simple, the useful minerals are native gold and electrum, and the gold minerals are of high quality and fine-grained. There are three kinds of occurrence states: crystal interface-gold, crack-gold and secondly inclusion gold. The crystal interface-gold includes single-crystal and group-crystal gold, the former mostly is irregular mid-and fine-grained; the latter is made of several or tens of relatively more finer grains, there is pyrite around group-crystal gold. Crack-gold mainly fills in cracks of pyrite in form of bars and irregular grains. Inclusion-gold is included in pyrite and secondly in chalcopyrite. This kind of gold occurrence state is favourable to ore dressing and smelting.