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Guimarãesite

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SER507713

Guimarãesite

Type Locality

Description Tabs

Description
Locality: 
Piauí Valley, Taquaral, Itinga, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.6 × 1.2 cm
Description

Little specimen featuring several yellow, also isolated guimaraesite crystals on albite matrix, with muscovite; the 4th and 5th photos show  platy crystals of guimaraesite inside the muscovite crystal with tiny white balls of (probabily) apatite

Mineral Data
What's on the rock

Guimarãesite

Formula: 
Ca2(Zn,Mg,Fe2+)5Be4(PO4)6(OH)4·6H2O
Strunz: 
8.DA.10
Hardness: 
0.0
Type Locality: 
Guimarãesite occurrence, Piauí valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Brazil