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Mineralpedia Details for Pascoite

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Pascoite

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+10O28ยท17H2
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 
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Pascoite from Homestake mine Sect. 23, McKinley Co., New Mexico, United States

Pascoite
            from Homestake mine Sect. 23, McKinley Co., New Mexico, United States

Bright orange crystalline crust.

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Pascoite from Veta Mad mine, San Miguel Co., Colorado, United States

Pascoite
            from Veta Mad mine, San Miguel Co., Colorado, United States

Bright efflorescent Pascoite coating matrix.

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Pascoite from Burro mine, Slick Rock dist., San Miguel Co., Colorado, United States

Pascoite
            from Burro mine, Slick Rock dist., San Miguel Co., Colorado, United States

Excellent specimen with bright orange Pascoite.

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Pascoite from West Sunday mine, San Miguel Co., Colorado, United States

Pascoite
            from West Sunday mine, San Miguel Co., Colorado, United States

Bright orange Pascoite. Rich coverage.

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