冀西石湖金矿床中黄铁矿的热爆特征及其启示

研究了不同世代黄铁矿的爆裂温度、爆裂曲线等成因矿物学信息及其与金矿化的关系。结果表明，黄铁矿的起爆温度可划分为4个区间，依次对应Ⅰ→Ⅱ→Ⅲ→Ⅳ4个成矿阶段；黄铁矿热爆裂曲线归纳为A、B、C3种基本类型，含金性好的黄铁矿的热爆曲线大多是B型曲线，含金性差或不合金的黄铁矿的热爆曲线大多属于A型曲线；曲线上有中低温峰的黄铁矿金品位高，起爆至368℃的区间无峰的矿化好；初步认为该区在180m中段以下的19～31线和3—11线会出现金品位的高值区。

Decrepitophouic characteristics of pyrite from Shihu gold deposit in western Hebei and its significance

Decrepitophouic temperature and curves of different generations of pyrite, which have much information related with gold mineralization, are studied in this paper. The analysis results show that the decrepitophouic temperature of pyrite can be divided into 4 intervals, corresponding to Ⅰ→Ⅱ→Ⅲ→Ⅳ 4 mineralization stages. The decrepitophouic curves of pyrite can be concluded to 3 kinds of basic types labeled by A, B, C, B type of which is corre- sponded to good Au-bearing pyrite, however, A type of which is corresponded to poor or not Au-bearing pyrite. Moreover, decrepitophouic curves containing medium-low temperature peaks, and have no peaks in the interval between initiation temperature and 368℃ is corresponded to good Au-bearing pyrite. The high gold grade zones of Shihu gold deposit are considered in the areas from 3 to 11 exploration line and from 19 to 31 exploration line below 180m level.