丝状自然银产出的地质地球化学条件

来源 :地质地球化学 | 被引量 : 0次 | 上传用户：lhyu11

【摘要】

：

<正> 丝状自然银是罕见矿物,1985年在河北省围场县满汉土银矿详查中却发现两个颗粒,它呈丝状,丝绳状,长短不等,长可达5mm以上,直径0.1～0.3mm;表面呈黑色,新鲜面为银白色;反射

【作者】

：

李国兴

【机构】

：

河北省地矿局第四地质大队

【出处】

：

地质地球化学

【发表日期】

：

1993年1期

【关键词】

：

银地质地球化学银矿床

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<正> 丝状自然银是罕见矿物,1985年在河北省围场县满汉土银矿详查中却发现两个颗粒,它呈丝状,丝绳状,长短不等,长可达5mm以上,直径0.1～0.3mm;表面呈黑色,新鲜面为银白色;反射色为亮白色,反射率大于95％;均质,具良好的延展性;比重大;硬度31.19～38.94kg/cm~2(负荷100g);电子探针分析表明含银达99.25％至99.361％,纯度

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丝状自然银产出的地质地球化学条件

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