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化合物氯化铵 来自维基百科，自由的百科全书
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 | |
|---|---|
Salammoniac crystals from a mine in Eisden, Maasmechelen, Limburg, Belgium (field of vision: 1.5 cm) | |
| 基本資料 | |
| 類別 | Halide mineral |
| 化学式 | NH4Cl |
| IMA記號 | 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 |
| 性質 | |
| 分子量 | 53.49 g/mol |
| 顏色 | 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 |
| 雙晶 | On {111} |
| 解理 | Imperfect on {111} |
| 断口 | Conchoidal |
| 韌性/脆性 | Sectile |
| 莫氏硬度 | 1–2 |
| 光澤 | Vitreous |
| 條痕 | White |
| 透明性 | Transparent |
| 比重 | 1.535 |
| 光學性質 | Isotropic |
| 折射率 | n = 1.639 |
| 双折射 | Weak after deformation |
| 發光性 | No |
| 吸收光譜 | No |
| 溶解度 | In water |
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