陕川丁家林-太阳坪金矿区金的赋存状态及主要特点分析

通过野外及镜下研究，初步查明了丁家林一太阳坪金矿区所含金矿物为自然金、银金矿及含银自然金。丁家林金矿区以包裹体金为主，太阳坪金矿区则以裂隙金为主，粒数及面积统计显示两矿区均以中、细粒金为主。两矿区的矿石中常见明金，为粗粒金，巨粒金及块状金。载体矿物主要为黄铁矿，次为石英，偶见方铅矿、黄铜矿及闪锌矿，金的矿化与富集以富黄铁矿，贫多金属硫化物为特征。两矿区金的赋存状态既有共同特征，也存在明显差异，各有特点。

Characteristic analysis of occurrences of gold in the Dingjialin and Taiyangping gold field of Shaanxi and Sichuan province

By studies in the field or under microscope, the gold minerals are found to be composed of gold, silver and silver-bearing gold in the Dingjialin and Taiyangping gold fields, The Dingjialin gold field are predominated by the inclusion-gold; whereas the Taiyangping gold field are predominated by the fracture-gold. Grain amount and area statistic show that medium or fine-grained gold are predominent in these two gold field . Coarse-grained gold, giant-grained gold and block gold are the common visible in ores. the carrier minerals are mainly pyrite,quartz and few galena, chalcopyrite and sphalerite. The mineralization and enrichment of gold are characterized by the rich-pyrite and poor other polymetallic sulfide. They have some different characters on the certain sameness both occurrences of gold in two fields.