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Jahnsite-(MnMnMg) & Strengite

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SER847399

Jahnsite-(MnMnMg) & Strengite

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: 
2.8 × 2.5 × 1.2 cm
Description

several crystals of jahnsite-MnMnMg, a new specie that I found in Sapucaia's dumps on 2012 and analysed by Pietro Vignola and published in Canadian Mineralogist ; here with white balls of strengite 

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

Strengite

Formula: 
FePO4·2H2O
Strunz: 
8.CD.10
Hardness: 
3.5 - 4.0
Streak: 
white
Type Locality: 
Eleonore Mine, Rodheim-Bieber, Wetzlar, Hesse, Germany