Mineralpedia Details for Euchroite
Euchroite
Named in reference to its beautiful emerald green color after the Greek words eu, used as a prefix to mean “fair” or “good,” and, chroma, meaning “color.” Euchroite is a rare mineral that can be found in localities in Slovakia, Greece, Bulgaria, the United States, and others and occurs in oxidized copper-bearing hydrothermal deposits. Minerals associated with Euchroite include olivenite, strashimirite, azurite, and malachite.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/euchroite.pdf
- Formula
- Cu2AsO4(OH)·3H2O
- Crystal System
- Orthorhombic
- Crystal Habit
- Crystalline - Fine, Druse
- Cleavage
- Imperfect, Imperfect, None
- Luster
- Vitreous (Glassy)
- Color
- leek green, emerald green
- Streak
- green
- Class
- Orthorhombic - Disphenoidal
- Fracture
- Sub Conchoidal
- Hardness
- 3.5-4
- WebMineral
- View Euchroite
- Mindat
- View Euchroite
Euchroite from L'ubietová (Libethen), Banská Bystrica, Slovakia
Well defined crystals to 1mm.
Click thumbnail images for larger view.
Euchroite from Cramer Creek, Missoula Co., Montana, United States
Euhedral, translucent Euchroite crystals, the largest to 2mm.
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