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湖南郴州南风坳银矿床银的赋存状态及分布规律 被引量:1

SILVER OCCURRENCE AND DISTRIBUTION REGULATION IN THE NANFENG'AO AG DEPOSIT IN CHENZHOU, HUNAN PROVINCE
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摘要 南风坳银矿是产于震旦系浅变质碎屑岩中受北北东—北东向断裂控制的热液充填交代型矿床。矿床中银主要以银矿物存在,次为类质同像。银的载体矿物主要为方铅矿,次为铁闪锌矿、黄铜矿、黄铁矿、毒砂等。已查明的银矿物15种,常见的10种,主要的银矿物为银黝铜矿和黝锑银矿,它们多呈显微包体分布在载银矿物中。银在矿区中部(03-17线)980m~1036m标高范围内富集。银与铅关系密切,银在富铅矿体中富集。 The Nanfeng'ao Ag deposit is a hydrothermal fissure filling-metasomatism type deposit controlled by NNE-NE trend faults. Wallrocks are Sinian low-grade metamorphic sandstone. Silver exists mainly in silver minerals. 15 silver minerals have been found, 10 of them are common. Main silver-minerals are silver fablerz, silver jamesonite. In addition, silver exists in Ag-bearing minerals in the form of isomorphous replacement. Main Ag-bearing mineral is galena, and others include marmatite, chalcopyrite, pyrite and arsenopyrite. Ag mineralization is concentrated in central ore area at 03 to 17 sections and 980 to 1036m level. Ag is rich in lead-rich orebodies, showing a positive relationship with lead.
出处 《地质与勘探》 CAS CSCD 北大核心 2003年第5期49-52,共4页 Geology and Exploration
关键词 银矿床 赋存状态 分布规律 南风坳银矿 热液充填交代型矿床 Ag occurrence, Ag deposit, Nanfeng'ao
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