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Pascoite

Named for its type locality at the Ragra mine near Cerro de Pasco in the Pasco province and Pasco department of Peru. An uncommon mineral, Pascoite is found in just a few localities, additionally including the Unites States and Argentina among just a couple others. Pascoite occurs with carnotite and can be found in vanadium deposits that rest near the surface and have been leached by ground water as well as in mine tunnels as efflorescences. Pascoite is soluble in water.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/pascoite.pdf
- Formula
- Ca3V5+10O28ยท17H2O
- Crystal System
- Monoclinic
- Crystal Habit
- Granular, Encrustations
- Cleavage
- Distinct, None, None
- Luster
- Vitreous - Adamantine
- Color
- yellow brown, yellow orange, red orange
- Streak
- yellow
- Class
- Monoclinic - Prismatic
- Fracture
- Conchoidal
- Hardness
- 2.5
- WebMineral
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- Mindat
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Pascoite from Homestake mine Sect. 23, McKinley Co., New Mexico, United States

Bright orange crystalline crust.
Pascoite from Veta Mad mine, San Miguel Co., Colorado, United States
Bright efflorescent Pascoite coating matrix.
Pascoite from Burro mine, Slick Rock dist., San Miguel Co., Colorado, United States
Excellent specimen with bright orange Pascoite.
Pascoite from West Sunday mine, San Miguel Co., Colorado, United States
Bright orange Pascoite. Rich coverage.