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Jahnsite & Fairfieldite

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SER770575

Jahnsite & Fairfieldite

Description Tabs

Description
Locality: 
Albères Massif, Pyrénées-Orientales, Occitanie, France
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.2 × 0.5 cm
Description

some clusters of yellow jahnsite with blades of fairfieldite ; self collected on 2013

Mineral Data
What's on the rock

Jahnsite

Synonym Of: 

Jahnsite-(CaMnFe)

Formula: 
{Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Jahnsite-(CaMnMg)

Formula: 
{Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Jahnsite-(CaMnMn)

Formula: 
{Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Jahnsite-(MnMnMn)

Formula: 
{Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

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
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