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Guimarãesite & Eosphorite

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SER123126

Guimarãesite & Eosphorite

Type Locality

Description Tabs

Description
Locality: 
Piauí Valley, Taquaral, Itinga, Minas Gerais, Brazil
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 4.1 × 2.5 cm
Description

from the type locality, guimaraesite occourence, Piaui' valley, this little sample shows yellow guimaraesite spheres on eosphorite crystals

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

Eosphorite

Formula: 
(Mn2+,Fe2+)Al(PO4)(OH)2·H2O
Strunz: 
8.DD.20
Crystal System: 
Orthorhombic
Hardness: 
5.0
Streak: 
White
Type Locality: 
Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA