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Jahnsite-(NaMnMg) Jahnsite-(CaMnMg) Laueite Hureaulite & Natrodufrénite

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PAV958110

Jahnsite-(NaMnMg) Jahnsite-(CaMnMg) Laueite Hureaulite & Natrodufrénite

New Discovery

Description Tabs

Description
Locality: 
Eduardo Claim, Conselheiro Pena, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 2 × 1.5 cm
Description

Very rich and spectacular sample from Eduardo Claim!

New find (analized) jahnsite-(NaMnMg) and Janhsite-(CaMnMg). The jahnsite-(NaMnMg) is yellow and mostly a pseudomorphose (epimorphose) after hureaulite. The jahnsite-(CaMnMg) is deep honey brown. Very nice group of laueite associated to strengite. Light green crystals of natrodufrénitem occasionally growing on deep green rockbridgeite.

In short: a festival of color and shapes!!!

An absolute beauty under the scope!!!

Acquired: 
Boxed with Label
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

Jahnsite-(CaMnMg)

Formula: 
{Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0
Streak: 
White
Type Locality: 
Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA

Laueite

Formula: 
Mn2+Fe3+2(PO4)2(OH)2·8H2O
Strunz: 
8.DC.30
Hardness: 
3.0
Streak: 
White
Type Locality: 
Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Hagendorf, Waidhaus, Upper Palatinate, Bavaria, Germany

Hureaulite

Formula: 
(Mn,Fe)5(PO4)2(HPO4)2·4H2O
Strunz: 
8.CB.10
Hardness: 
5.0
Type Locality: 
Les Hureaux, Saint-Sylvestre, Haute-Vienne, Limousin, France

Natrodufrénite

Formula: 
NaFe2+Fe3+5(PO4)4(OH)6·2H2O
Strunz: 
8.DK.15
Hardness: 
3.5 - 4.5
Type Locality: 
Pluherlin Castle, Rochefort-en-Terre, Morbihan, Brittany, France