金川富铜矿体金银赋存特征

The author analyses the exiting feature of gold in Cu Ni sulfide ore in the Jinchuan Cu Ni deposit. Gold and sulfide were deposited in the major metallogenic stage and formed at the same time. The study shows that deposition of gold and rare metals are related to the strong wall rock alteration .The average contents of gold are 45%, 12.9% and 20%,respectively in independent gold,Cu Ni sulfide and gangue minerals.

潼关地区8号金矿脉金银赋存特征

8号金矿脉(Q8)是小秦岭金矿田中含金量较高、具中等规模的一条金矿脉,产于小秦岭复背斜的南翼,赋存于太华群中基性火山-沉积建造的变质岩系中。矿床属中低温中深岩浆热液型矿床。矿脉长4430m,地表厚0.7～1.2m,地下最大厚度可达7m。 金赋存于金属硫化物中,尤其与黄铁矿密切相关;矿石具粒状、压碎、交代、次生四大结构类型,以粒状结构为主;矿石构造以条带状为主,其次是块状、团块状、浸染状、细脉状、晶洞状、次生构造较少;矿石类型主要是黄铁矿型和多金属硫化物型两种,金品位较高且分布广。