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Jahnsite-(MnMnMg) & Beraunite

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SER727184

Jahnsite-(MnMnMg) & Beraunite

Description Tabs

Description
Locality: 
Sapucaia Mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 0.8 × 0.5 cm
Description

little but rich of good crystals of the new jahnsite analysed by Pietro Vignola that I found in the dumps of sapucaia mine on 2011, here in orange crystals with green tufts of beraunite

Mineral Data
What's on the rock

Jahnsite-(MnMnMg)

Formula: 
Mn2+Mn2+Mg2Fe3+2(PO4)4(OH)2 · 8H2O
Crystal System: 
Monoclinic
Type Locality: 
Sapucaia do Norte, Galiléia, Minas Gerais, Brazil

Beraunite

Formula: 
Fe2+Fe3+5(PO4)4(OH)5·6H2O
Group Parent: 
Beraunite Group
Strunz: 
8.DC.27
Crystal System: 
Monoclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Hrbek Mine, Svatá Dobrotivá (St Benigna), Beroun (Beraun), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic
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