| 陕西镇安丘岭,二台子金矿床富砷矿石中金的赋存状态 |
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| 引用本文： | 张复新,申萍.陕西镇安丘岭,二台子金矿床富砷矿石中金的赋存状态[J].西北地质科学,1996,17(2):38-50. |
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| 作者姓名： | 张复新 申萍 |
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| 作者单位： | 西北大学地质系，西安矿业学院地质系 |
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| 摘 要： | 对丘岭、二台子微细浸染型金矿床中－高含金样品的光学、背散射电子、二次离子和高分辨透射电镜图象分析表明，金与砷具有显微尺度的强相关性。金和砷主要赋存于含砷黄铁矿增生体、毒砂和砷黝铜矿之中。已发现金一般呈微米级小圆球存在于含砷硫化物中。次显微金在高异常区的沉淀作用是如此之迅速，其以微细自然金颗粒存在于砷的硫化物中。
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| 关 键 词： | 含砷硫化物，增生环带结构，次显微金，丘岭、二台子微细浸染型金矿床 |
STUDY ON MODE OF OCCURRENCE OF SUBMICRON GOLD IN As-RICH GOLD ORES OF QIULING AND ERTAIZI FINELY-DISSEMINATED GOLD DEPOSITS |
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| Zhang Fuxin.STUDY ON MODE OF OCCURRENCE OF SUBMICRON GOLD IN As-RICH GOLD ORES OF QIULING AND ERTAIZI FINELY-DISSEMINATED GOLD DEPOSITS[J].Northwest Geoscience,1996,17(2):38-50. |
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| Authors: | Zhang Fuxin |
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| Abstract: | The optical, backscattered electron, secondary ion, and high-precision transmission electron microscope imaging of samples containing moderate to high gold concentrations in Qiuling and Ertaizi finely disseminated gold deposits indicates that gold is strongly correlated with As on a microscopic scale. Both elements of An and As are present primarily in as arsenian pyrite overgrowths and arsenopyrite, the author discovered that the gold occurs usually in small chain balls of its natural form with a size of micron-grade in the arseno-bearing sulfids. The deposition may have been so rapid in these high-grade areas that submicrongold could be deposited and dissolved in the arseno-sulfide structure as small native gold grains. |
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| Keywords: | The arseno-bearing sulfide overgrowth zoning structure submicron |
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