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Greifensteinite & Muscovite

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SER186199

Greifensteinite & Muscovite

Description Tabs

Description
Locality: 
Jenipapo District, Itinga, Minas Gerais, Brazil
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 3.1 × 2.1 cm
Description

A brown sphere on "star" muscovite

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

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White