Description
Salmiac is a cubic crystalline chemical mineral with the chemical formula NH4Cl.
It is a naturally occurring ammonium chloride.
It is an evaporite mineral of the chloride class.
It appears here as fine white crystals in a black basaltic lava from Sicily.
Presence of a handwritten label in the hand of Lacoste de Plaisance, an early 18th-century collector.
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