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Triphylite Hureaulite Fairfieldite & Rockbridgeite

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SER1150333

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Description
Locality: 
Cigana (Jocão), Galiléia, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 2.2 × 2.2 cm
Description

yellow crystalline triphylite on black rockbridgeite in company with pink lustrous hureaulite crystals and white fairfieldite ; self collected on 2011

Mineral Data
What's on the rock

Triphylite

Formula: 
LiFe2+PO4
Strunz: 
8.AB.10
Crystal System: 
Orthorhombic
Hardness: 
4.0
Type Locality: 
Hühnerkobel Mine (Hennenkobel Mine), Rabenstein, Zwiesel, Lower Bavaria, Bavaria, Germany

Hureaulite

Formula: 
(Mn,Fe)5(PO4)2(HPO4)2·4H2O
Strunz: 
8.CB.10
Hardness: 
5.0
Type Locality: 
Les Hureaux, Saint-Sylvestre, Haute-Vienne, Limousin, France

Fairfieldite

Formula: 
Ca2(Mn2+,Fe2+)(PO4)2·2H2O
Strunz: 
8.CG.05
Hardness: 
3.5
Streak: 
White
Type Locality: 
Fillow Quarry (Branchville Quarry; Branchville Mica Mine; Smith Mine), Branchville, Redding (Reading), Fairfield Co., Connecticut, USA

Rockbridgeite

Formula: 
Fe2+Fe3+4(PO4)3(OH)5
Strunz: 
8.BC.10
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.5
Type Locality: 
Midvale Mine, South Mountain, Midvale, Rockbridge Co., Virginia, USA

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