Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Jahnsite-(NaMnMg) & Cacoxenite

Views:
Watches:
SER896027

Jahnsite-(NaMnMg) & Cacoxenite

Type Locality

Description Tabs

Description
Locality: 
Sapucaia Mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 2.3 × 1.6 cm
Description

several clusters of yellow brown crystals of the new specie of jahnsite group that I found on 2012 in the Sapucaia's dumps , analysed by Tony Kamps  and published on the Canadian mineralogist , here with yellow tufts of cacoxenite

Mineral Data
What's on the rock

Jahnsite-(NaMnMg)

Formula: 
{(Na,Ca)}{(Mn2+,Fe3+)}{(Mg,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Strunz: 
8.DH.15
Crystal System: 
Monoclinic
Type Locality: 
Sapucaia Mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil

Cacoxenite

Formula: 
Fe3+24Al(PO4)17O6(OH)12·17H2O
Strunz: 
8.DC.40
Hardness: 
3.0 - 4.0
Type Locality: 
Hrbek Mine, Svatá Dobrotivá (St Benigna), Beroun (Beraun), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic