Zanazziite

A variety of Roscherite Group

Zanazziite specimen - rock identification

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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Zanazziite Localities Map

See where Zanazziite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

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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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