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Chlorargyrite
Chemical Formula	AgCl
Species	Halides
Crystal System	Isometric
Mohs Scale	1-2
Specific Gravity	5.57
Color	Colourless (fresh); bright chartreuse-green, light yellow, light green, grey; becoming Purple-brown on exposure to light.
Streak	White
Luster	Adamantine, Resinous, Waxy
Refractive Index	n = 2.071
Diaphaneity	Transparent, Translucent
Cleavage	None Observed
Fracture	Irregular/Uneven, Sub-Conchoidal
Geological Setting：Oxidized zone of silver deposits, especially in arid regions.

Chlorargyrite is the mineral form of silver chloride (AgCl). Chlorargyrite occurs as a secondary mineral phase in the oxidation of silver mineral deposits. It crystallizes in the isometric - hexoctahedral crystal class. Typically massive to columnar in occurrence it also has been found as colorless to variably yellow cubic crystals. The color changes to brown or purple on exposure to light. It is quite soft with a Mohs hardness of 1 to 2 and dense with a specific gravity of 5.55. It is also known as cerargyrite and, when weathered by desert air, as horn silver. Bromian chlorargyrite (or embolite) is also common. Chlorargyrite is water insoluble.

It was first described in 1877 for occurrences in the Broken Hill district, New South Wales, Australia. The name is from the Greek, chloros for "pale green" and Latin for silver, argentum.