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Variscite & Alluaudite

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SER103015

Variscite & Alluaudite

Description Tabs

Description
Locality: 
Boa Vista Pegmatite, Conselheiro Pena, Minas Gerais, Brazil
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.1 × 2.4 cm
Description

Some vugs full of red, rounded variscite crystals with vitreous, yellow alluaudite masses

Mineral Data
What's on the rock

Variscite

Formula: 
AlPO4·2H2O
Strunz: 
8.CD.10
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.5
Streak: 
White
Type Locality: 
Meßbach Quarry, Meßbach, Plauen, Vogtland, Saxony, Germany

Alluaudite

Formula: 
(Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3
Strunz: 
8.AC.10
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Varuträsk, Skellefteå, Västerbotten, Sweden