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Formula: (NH4)Cl
Chloride
Crystal System: Isometric
Specific gravity: 1.532 measured, 1.535 calculated
Hardness: 1 to 2
Streak: White
Colour: Colourless, white, sometimes yellow or brown
Solubility: Soluble in water
Environments
Cave deposits
Fumeroles
Coal-seam fires
Salammoniac is a sublimation product around volcanic fumaroles; in burning coal seams and waste piles; in guano
deposits. The ammonia usually is derived from organic matter. Associated minerals include
sulphur in fumaroles, and realgar,
orpiment, sulphur,
mascagnite and tschermigite in
burning coal seams
(HOM).
Localities
At Pabellón de Pica, Chanabaya, Iquique Province, Tarapacá, Chile, ammineite
occurs as mm-sized blue crystals and also as powdery masses, associated with
halite, atacamite,
salammoniac and darapskite
(CM 48.1359-1371).
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