Zanazziite
A variety of Roscherite Group

What is Zanazziite?
Zanazziite is a complex hydrated phosphate mineral from the roscherite group. It is a magnesium beryllium phosphate mineral. Zanazziite arises as barrel-shaped crystals and can reach up to 4 mm. It grows alongside quartz minerals. It is found in the crevices of Lavra da Ilha pegmatite, near Taquaral, in northeastern Minas Gerais, Brazil. Zanazziite is named after Pier F. Zanazzi. Zanazziite has an ideal chemical formula of Ca2Mg5Be4(PO4)6(OH)4·6H2O.
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Quick Facts
Physical Properties
- Color
- Pale to dark olive-green
- Hardness (Mohs)
- 5
- Density
- 2.77 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Ca2Mg5Be4(PO4)6(OH)4 · 6H2O The formula given above is the idealised formula. The type description and Mandarino (1997) writes the formula as Ca2(Mg,Fe3+)(Mg,Fe2+, Al)Be4Mg5(PO4)6(OH)4.6H2O
- Elements
- Be, Ca, H, Mg, O, P

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