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Mineralpedia Details for Antlerite

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Antlerite

Antlerite

Named after the type locality at the Antler mine in Arizona, USA. Additional localities for this uncommon mineral include in Mexico, Chile, Germany, England, Spain, and a number of other localities. It occurs in oxidized copper deposits usually under highly acidic conditions and in arid regions. Minerals associated with Antlerite include brochantite, atacamite, chalcanthite, krohnkite, natrochalcite, linarite, and gypsum.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/antlerite.pdf

Formula
Cu2+3SO4(OH)4 
Crystal System
Orthorhombic 
Crystal Habit
Acicular, Concretionary, Reniform 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
green, light green, emerald green, black, black green 
Streak
pale green 
Class
Orthorhombic - Dipyramidal 
Fracture
Uneven 
Hardness
WebMineral
View Antlerite 
Mindat
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Antlerite from Santa Catalina mine, Sierra Gorda, Atacama prov., Chile

Antlerite
            from Santa Catalina mine, Sierra Gorda, Atacama prov., Chile

Deep emerald green, thin tabular micro crystals less than 0.4mm.

Click thumbnail images for larger view.

Antlerite from Blanchard mine, Socorro Co., New Mexico, United States

Antlerite
            from Blanchard mine, Socorro Co., New Mexico, United States

Emerald green micro prismatic Antlerite in 1.5mm clusters.

Click thumbnail images for larger view.

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