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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)16·56H2O
- Crystal System
- Monoclinic
- Cleavage
- Perfect, None, None
- Luster
- Vitreous (Glassy)
- Color
- yellow, light yellow
- Streak
- yellow white
- Class
- Monoclinic
- Hardness
- 1
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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!