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Mineralpedia Details for Paramendozavilite

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Paramendozavilite

Paramendozavilite

Named after the Greek word para, meaning “near”, and for its chemical similarities to mendozavilite. Paramendozavilite is a rare mineral found only at its type locality at the Cumobabi molybdenum deposit in Sonora, Mexico and in a newer locality in the United States. It occurs at its type locality in oxidized molybdenum-rich pegmatitic breccias within a granodiorite.

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

Formula
NaAl4Fe3+7(PO4)5(P5+Mo6+12O40)(OH)16·56H2
Crystal System
Monoclinic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
yellow, light yellow 
Streak
yellow white 
Class
Monoclinic 
Hardness
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Paramendozavilite from Cumobabi, La Verde dist., Sonora, Mexico

Paramendozavilite
            from Cumobabi, La Verde dist., Sonora, Mexico

Bright yellow platy crystals and crusts from type locality. One of only two worldwide localities. There is a lot of water in this structure - 56 molecules!

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