美丽的白铅矿
白铅矿属于次生矿物,产于方铅矿的氧化带。通俗点说就是近地表的方铅矿遇到带有碳酸根的溶液,就形成了白铅矿,完成了从黑色的丑小鸭(方铅矿)到白天鹅(白铅矿)的蜕变。
方铅矿
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白铅矿
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白铅矿化学成分为碳酸铅(PbCO3),和文石的结构是一样的,斜方晶系,晶形多变:多见板状、片状,集合体有块状、肾状、针状、皮壳状等,也常以双晶形式出现:有星状、V字型、雪花状、网状等。
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![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHBzL3VzZXJpbWFnZTguMzYwZG9jLmNuLzIxLzA5MTEvMTMvNDMwMDQyNDRfMjAyMTA5MTExMzM5MjcwNDg4NTcyMzMzLmpwZw==.jpg)
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晶体柱面羟有浅沟纹。
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纯净的白铅矿为白色,当含有铅包裹体等杂质时,也会呈现灰色、浅绿色、蓝色等。
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折射率为1.803-2.076,玻璃光泽到金刚光泽,有时为油脂光泽或珍珠光泽。有不完全柱状解理,透明到半透明。以硬度偏低、密度大为其特点:摩氏硬度为3-3.5,密度为6.4-6.6。白铅矿在阴极射线下发浅蓝绿色荧光,这个特点可以做其鉴别特征。
白铅矿由于其多变漂亮的晶形及多种矿物组合而深受矿晶爱好者的喜欢!白铅矿与磷氯铅矿
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白铅矿与绿铜矿
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白铅矿与蓝铜矿
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同时白铅矿拥有比钻石更璀璨的火彩而受到宝石爱好者的青睐。白铅矿的色散为0.055,而钻石色散为0.044。
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