北京大学学报(自然科学版)

叶碲铋矿在我国的首次发现

刘玉琳   

  1. 北京大学地球与空间科学学院,北京,100871
  • 收稿日期:2001-09-20 出版日期:2002-07-20 发布日期:2002-07-20

Pilsenite First Found in China

LIU Yulin   

  1. School of the Earth and Space Science, Peking University, Beijing, 100871
  • Received:2001-09-20 Online:2002-07-20 Published:2002-07-20

摘要: 叶碲铋矿极为罕见,矿物学资料匮乏。高庄金矿的叶碲铋矿为中国首次发现,它主要产于磁黄铁矿-多金属阶段,与磁黄铁矿、黄铁矿、黄铜矿、碲银矿、自然金等共生。经电子探针分析,高庄金矿有多种铋碲化物,有三粒矿物的成分与标准叶碲铋矿完全一致。对一较大颗粒的叶碲铋矿做了单晶X射线衍射分析。Au与Bi在矿石和围岩中的含量呈共消长关系,Te与Bi可能对Au、Ag的迁移富集起了重要作用。

关键词: 高庄金矿, 叶碲铋矿, 单晶衍射

Abstract: Pilsenite is a rare mineral and its information is deficient. The first found pilsenite in China is in Gaozhuang, Henan province. Pilsenite, associated with pyrrhotite, pyrite, hessite, gold, produced in pyrrhotite-polymetallic stage. Three bismuth-tellurides produced in Gaozhuang are well concordant with the standard pilsenite in composition, and other three are different from any of known bismuth-tellurium minerals. Single crystal diffraction were made on a larger mineral grain of pilsenite. Au growth and decline together with Bi and Te in ores and wall-rocks, which suggests that Bi and Te play a important role in migration and enrichment of Au.

Key words: Gaozhuang gold deposit, pilsenite, single crystal diffraction

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