Mineralpedia Details for Arthurite
Arthurite
Named to honor Sir Arthur Edward Ian Montagu Russell and Arthur William Gerald Kingsbury, for their contributions to British mineralogy. Arthurite is a rare mineral that occurs in oxidized copper deposits and forms as a result of the alteration of arsenopyrite or enargite. Localities for Arthurite include in England, Germany, Portugal, Spain, Chile, the United States, and Australia among a few others.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/arthurite.pdf
- Formula
- CuFe3+2(AsO4)2(OH)2ยท4H2O
- Crystal System
- Monoclinic
- Crystal Habit
- Prismatic, Acicular, Spherical
- Cleavage
- None, None, None
- Luster
- Vitreous (Glassy)
- Color
- apple green, emerald green
- Streak
- light green
- Class
- Monoclinic - Prismatic
- Fracture
- Brittle
- Hardness
- 3-4
- WebMineral
- View Arthurite
- Mindat
- View Arthurite
Arthurite from Majuba Hill mine, Pershing Co., Nevada, United States
Bright to dark green, compact radial tufts of Arthurite to 1mm. The radial nature of the crystal aggregates is demonstrated in the lower left.
Rich grass green tufts of Arthurite to 1mm composed of prismatic crystals in tight radial sprays associated with prismatic, glassy Olivenite crystals.
Arthurite from Calstock, Cornwall, England
Grass green patches of Arthurite composed of very micro acicular sprays.
