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Fairfieldite Triphylite & Rockbridgeite

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SER683143

Fairfieldite Triphylite & Rockbridgeite

Description Tabs

Description
Locality: 
Cigana (Jocão), Galiléia, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.1 × 2.5 cm
Description

Some white fairfieldite crystals with yellow crystalline triphylite and some tiny crystals of rockbridgeite; self collected on 2014

Mineral Data
What's on the rock

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

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

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