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Kastningite Mangangordonite & Cacoxenite

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SER1102668

Kastningite Mangangordonite & Cacoxenite

Description Tabs

Description
Locality: 
Sapucaia Mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2.7 × 1.7 cm
Description

several gropus of yellow radial, pointed kastningite crystals with tiny orange mangangordonite and yellow cacoxenite ; self collected on 2012 in Sapucaia's dumps and analysed by Pietro Vignola in Milan

Mineral Data
What's on the rock

Kastningite

Formula: 
(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2·8H2O
Strunz: 
8.DC.30
Crystal System: 
Triclinic
Hardness: 
1.0 - 2.0
Streak: 
White
Type Locality: 
Silbergrube, Waidhaus, Upper Palatinate, Bavaria, Germany

Mangangordonite

Formula: 
Mn2+Al2(PO4)2(OH)2·8H2O
Strunz: 
8.DC.30
Hardness: 
3.0
Type Locality: 
Foote Lithium Co. Mine (Foote Mine), Kings Mountain District, Cleveland Co., North Carolina, USA

Cacoxenite

Formula: 
Fe3+24Al(PO4)17O6(OH)12·17H2O
Strunz: 
8.DC.40
Hardness: 
3.0 - 4.0
Type Locality: 
Hrbek Mine, Svatá Dobrotivá (St Benigna), Beroun (Beraun), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic