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Guimarãesite & Fluor-elbaite

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SER128971

Guimarãesite & Fluor-elbaite

Type Locality

Description Tabs

Description
Locality: 
Piauí Valley, Taquaral, Itinga, Minas Gerais, Brazil
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.1 × 4.1 × 2.9 cm
Largest Crystal: 
2.90cm
Description

Yellow guimaraesite crystals on fluorelbaite (largest crystal is 2.9 cm tall) from the type locality guimaraesite occourence, Piaui' valley, Taquaral, Itinga

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