Zanazziite

phosphate

roscherite

Formula: Ca2Be4Mg5(PO4)6(OH)4.6H2O
Hydrated phosphate containing hydroxyl, roscherite group
Specific gravity: 2.76
Hardness: 5
Streak: White
Colour: Pale to dark olive-green
Environments:

Pegmatites

Zanazziite is a rare beryllium-bearing phosphate.

At the type locality, the Ilha claim, Taquaral, Itinga, Minas Gerais, Brazil, zanazziite occurs in a granite pegmatite associated with albite, muscovite, wardite, eosphorite, whiteite, apatite, pyrite, manganese oxides, roscherite, colourless quartz and rose quartz (AM 76.1732, Dana, Mindat).

At the Martin prospect, Newry, Maine, USA, zanazziite occurs with fluorapatite and albite (HOM).

Common impurities: Mn,Si

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