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白铅矿

白铅矿
基本資料
類別碳酸盐矿物
化学式PbCO3
IMA記號Cer[1]
施特龙茨分类5.AB.15
晶体分类双锥 (mmm)
H-M记号:(2/m 2/m 2/m)
晶体空间群Pnma [62]
性質
顏色无色、白色、灰色、蓝色或绿色
晶体惯态大块粒状、网状、板状至等量晶体
晶系正交
雙晶简单或周期接触孪生
解理[110]与[021]良好
断口脆,贝壳状
莫氏硬度3 - 3.5
光澤金刚光泽、玻璃光泽、树脂光泽
條痕白色
透明性透明至半透明
比重6.53–6.57
光學性質双轴 (-)
折射率nα = 1.803, nβ = 2.074, nγ = 2.076
双折射δ = 0.273
其他特徵在低UV下可能会发出黄色荧光
參考文獻[2][3][4]

白铅矿(英語:Cerussite)是一种由碳酸铅(PbCO3)组成的矿物,是一种重要的铅矿石。白铅矿的英文名来自拉丁语cerussa”,意为“白铅”。

白铅矿以斜方晶系结晶,与霰石同晶。像霞石一样,它经常产生孪晶,复合晶体呈假六角形。三个晶体通常在棱镜的两个面上孪生在一起,产生六射线星状群,各个晶体以接近60°的角度交叉。晶体经常出现,它们通常具有非常明亮和光滑的表面。该矿物还以致密的颗粒状存在,有时以纤维状形式存在。该矿物通常为无色或白色,有时呈灰色或绿色,从透明到半透明不等,带有金刚光泽。它非常脆,并且有贝壳状断口。它的莫氏硬度为3 - 3.75,比重为6.5。

该矿物可以通过其特有的孪晶特征以及金刚光泽和高比重来轻松识别。在稀硝酸中起泡溶解。吹管测试顯示它很容易熔断,并给出含铅的指標。[5]

白铅矿经常被大量发现,铅含量高达77.5%。[6]

圖集

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参考资料

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  1. ^ Warr, L.N. IMA–CNMNC approved mineral symbols. Mineralogical Magazine. 2021, 85 (3): 291–320 [2022-07-02]. Bibcode:2021MinM...85..291W. S2CID 235729616. doi:10.1180/mgm.2021.43. (原始内容存档于2021-12-13). 
  2. ^ Mineralienatlas. [2022-07-02]. (原始内容存档于2021-02-20). 
  3. ^ Cerussite页面存档备份,存于互联网档案馆). Handbook of Mineralogy. (PDF) Retrieved on 2011-10-10.
  4. ^ Cerussite页面存档备份,存于互联网档案馆). Mindat. Retrieved on 2011-10-10.
  5. ^ Spencer 1911.
  6. ^ Mineral Information Service (PDF). California Division of Mines: 2. November 1949 [4 June 2016]. [失效連結]
  7. ^ Iconic: Light of the Desert. 2009-11-26 [2012-07-25]. (原始内容存档于2021-10-03). 

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白铅矿
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