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

事实速览 卤砂, 基本資料 ...
卤砂
Thumb
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
关闭

卤砂质地柔软,莫氏硬度为1.5至2,比重较低,为1.5,可溶于水。

卤砂也是化合物氯化铵的古老名称。

参考文献

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