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Jahnsite & Manganrockbridgeite

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SER1164060

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Description
Locality: 
Cigana (Jocão), Galiléia, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.6 × 1.8 cm
Description

some yellow well formed jahnsite crystals on a carpet of brown green manganrockbridgeite

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

Manganrockbridgeite

Formula: 
Mn2+2Fe3+3(PO4)3(OH)4(H2O)
Group Parent: 
Rockbridgeite Group
Strunz: 
8.BC.
Crystal System: 
Monoclinic
Colour: 
Green
Streak: 
Greyish-green
Type Locality: 
Hagendorf South Pegmatite, Bavaria, Germany

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Start 10 Feb 18:00
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