Formula: NH4Cl
Origin of name: from Latin for salt of Ammon (Egypt)
Crystal system: cubic
Crystal class: 4/m -3 2/m
Twinning: common on {111}
Unit cell: a = 3.87 Å
Colour: colourless, white, grayish, yellow, brown from impurities
Diaphaneity:
Luster: vitreous
Habit: crystals trapezohedral, dodecahedral or cubic, faces often curved or stepped, skeletal or dendritic aggregates
Hardness: 1 to 2
Specific gravity: 1.5321
Cleavage: 1; {111} imperfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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