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Fairfieldite & Jahnsite-(CaMnFe)

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CR625903

Fairfieldite & Jahnsite-(CaMnFe)

Classic Locality

Description Tabs

Description
Locality: 
Hagendorf South Pegmatite, Bavaria, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.4 × 4.3 × 3.5 cm
Description

Rich specimen of beautiful lenticulas fairfieldite crystals, dark brown jahnsite CaMnFe crystals groups and pale brown reddingite octahedrons on rockbridgeite matrix.

Fairfieldite is rare at Hagendorf. This is truely a very good specimen of this rare phosphate in an interesting combination.

Collected 1974

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

Jahnsite-(CaMnFe)

Formula: 
{Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0
Streak: 
White
Type Locality: 
Fletcher Mine, Groton, Grafton Co., New Hampshire, USA