Chlorargyrite
Image: Robert M. Lavinsky (CC BY-SA 3.0)
Mineral NameChlorargyrite
Chemical FormulaAgCl
Mohs Hardness1.5
Crystal Systemcubic
Lusteradamantine
Streak Colorwhite
Cleavagenone
Fractureconchoidal
Specific Gravity5.55
Colorsyellowish-green, greenish-gray, white, gray, colorless
Transparencytransparent
Type LocalityBroken Hill, New South Wales, Australia
Mineral GroupHalides
Usessilver ore, collector
Associated Mineralsiodargyrite, bromargyrite, native silver, cerussite, anglesite, limonite, quartz
Rarityuncommon
Description
This specimen features yellowish-green to greenish-gray, waxy-looking crystals of chlorargyrite, possibly forming cubic or massive aggregates, on a matrix.
Geological Context
Chlorargyrite is a secondary mineral that forms in the oxidized zone of silver-bearing ore deposits, particularly in arid climates, as a product of the alteration of primary silver minerals.
