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Serrabrancaite & Vernadite

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SKY591792

Serrabrancaite & Vernadite

Type Locality

Description Tabs

Description
Locality: 
Serra Branca Pegmatite, Pedra Lavrada, Borborema Province, Paraiba, Brazil
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 0.8 × 0.5 cm
Description

Brown crystals of the very rare mineral serrabrancaite from the type and only one of the 5 localities known worldwide, in a matrix of black vernadite.

Mineral species rarely seen in the mineral market !.

Mineral Data
What's on the rock

Serrabrancaite

Formula: 
MnPO4·H2O
Strunz: 
8.CB.05
Crystal System: 
Monoclinic
Hardness: 
3.5
Type Locality: 
Serra Branca pegmatite, Pedra Lavrada, Borborema mineral province, Paraíba, Brazil

Vernadite

Formula: 
(Mn4+,Fe3+,Ca,Na)(O,OH)2 · nH2O
Strunz: 
4.FE.40
Crystal System: 
Hexagonal
Hardness: 
2 -
Colour: 
Black
Streak: 
Dark Brown, Black
Type Locality: 
Kusimovskoye, Bashkortostan Republic, Southern Urals, Urals Region, Russia

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