Hydrated phosphate containing hydroxyl, roscherite group
Specific gravity: 2.76
Colour: Pale to dark olive-green
Common impurities: Mn,Si
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).
At the Palermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA, rare zanazziite usually occurs as acicular crystals to 1.5 mm; monoclinic prisms, bladed and barrel-shaped crystals, as well as spherical aggregates also occur. The colour ranges from white to various shades of olive-green (R&M 97.3.231).
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