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Greifensteinite & Beryllonite

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SER105644

Greifensteinite & Beryllonite

Description Tabs

Description
Locality: 
Gentil Claim, Mendes Pimentel, Minas Gerais, Brazil
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 3.5 × 3.6 cm
Description

some brown, rounded crystals of greifensteinite on albite with some beryllonite on matrix

Mineral Data
What's on the rock

Greifensteinite

Formula: 
Ca2Fe2+5Be4(PO4)6(OH)4·6H2O
Strunz: 
8.DA.10
Hardness: 
0.0
Type Locality: 
Greifenstein Rocks, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany

Beryllonite

Formula: 
NaBePO4
Strunz: 
8.AA.10
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Streak: 
White
Type Locality: 
Joe McKeen Mountain locality (McKean Farm), Stoneham, Oxford Co., Maine, USA