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Greifensteinite & Albite

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SER174163

Greifensteinite & Albite

Description Tabs

Description
Locality: 
Gentil Claim, Mendes Pimentel, Minas Gerais, Brazil
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 1.2 cm
Description

Little but nice item featuring numerous brown aggregates of greifensteinite (a rare Be-phosphate) with a colourless crystal of albite

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

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden