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Nizamoffite & Jahnsite-(CaMnMn) & Earlshannonite

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CHP916218

Nizamoffite & Jahnsite-(CaMnMn) & Earlshannonite

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Description Tabs

Description
Locality: 
Sítio do Castelo Mine, Folgosinho, Gouveia, Guarda District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.1 × 1.9 × 1.6 cm
Description

specimen with some excellent clear colourless aggregates of the extremely rare nizamoffite with brownish aggregates of earlshannonite and very nice yellow crystals of jahnsite-(CaMnMn) on mtrix.

c. 4482

Mineral Data
What's on the rock

Nizamoffite

Formula: 
Mn2+Zn2(PO4)2(H2O)4
Hardness: 
0.0
Type Locality: 
Palermo No. 1 Mine (Palermo No. 1 pegmatite; Hartford Mine; GE Mine), Groton, Grafton Co., New Hampshire, USA

Jahnsite-(CaMnMn)

Formula: 
{Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0
Streak: 
White
Type Locality: 
Cubos-Mesquitela-Mangualde area, Mangualde, Viseu District, Portugal

Earlshannonite

Formula: 
Mn2+Fe3+2(PO4)2(OH)2·4H2O
Strunz: 
8.DC.15
Crystal System: 
Monoclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Foote Lithium Co. Mine (Foote Mine), Kings Mountain District, Cleveland Co., North Carolina, USA

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