卤砂
化合物氯化铵
卤砂,英文名Salammoniac[2],也称为 Sal ammoniac 或 Salmiac,是一种罕见的天然矿物,主要成分是氯化铵(NH4Cl),可形成无色、白色或黄棕色等轴六面体点阵,难发生解理,易发生贝壳状破裂。
卤砂 | |
---|---|
基本资料 | |
类别 | Halide mineral |
化学式 | NH4Cl |
IMA记号 | Sam[1] |
施特龙茨分类 | 3.AA.25 |
晶体分类 | Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) |
晶体空间群 | Pm3m |
晶胞 | a = 3.859 Å; Z = 1 |
性质 | |
分子量 | 53.49 g/mol |
颜色 | Colorless, white, pale gray; may be pale yellow to brown, if impure. |
晶体惯态 | Crystals skeletal or dendritic; massive, encrustations |
晶系 | Isometric |
双晶 | On {111} |
解理 | Imperfect on {111} |
断口 | Conchoidal |
韧性/脆性 | Sectile |
莫氏硬度 | 1–2 |
光泽 | Vitreous |
条痕 | White |
透明性 | Transparent |
比重 | 1.535 |
光学性质 | Isotropic |
折射率 | n = 1.639 |
双折射 | Weak after deformation |
发光性 | No |
吸收光谱 | No |
溶解度 | In water |
参考文献
- ^ Warr, L.N. IMA–CNMNC approved mineral symbols. Mineralogical Magazine. 2021, 85 (3): 291–320. Bibcode:2021MinM...85..291W. S2CID 235729616. doi:10.1180/mgm.2021.43 .
- ^ Brandes, Nathalie N.; Brandes, Paul T. Australopithecus to Mindat: Mineralogy through the ages. 2018 New Mexico Mineral Symposium, Proceedings Volume, Theme: "The Santa Eulalia Mining District, Chihuahua, Mexico" (Socorro, NM: New Mexico Bureau of Geology and Mineral Resources). 2018-11-10. doi:10.58799/nmms-2018.592.