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Guimarãesite & Fluor-elbaite

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SER104735

Guimarãesite & Fluor-elbaite

Type Locality

Description Tabs

Description
Locality: 
Piauí Valley, Taquaral, Itinga, Minas Gerais, Brazil
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 5.5 × 3.1 cm
Largest Crystal: 
0.10cm
Description

a complete coverage of yellow, rounded guimataesite crystals on some 2 cm. green fluorelbaite crystals from its type locality, Guimaraesite occourence, Piaui' valley, Taquaral

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

Fluor-elbaite

Formula: 
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Hardness: 
0.0
Streak: 
White
Type Locality: 
Cruzeiro mine, São José da Safira, Doce valley, Minas Gerais, Brazil