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Beraunite Stewartite & Cacoxenite

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SYM1092601

Beraunite Stewartite & Cacoxenite

Rare Mineral

Description Tabs

Description
Locality: 
Foote Mine, Cleveland County, North Carolina, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.8 × 0.8 cm
Description

Nice rich specimen of brown beraunite crystals with yellow stewartite crystals on the matrix. 

Mineral Data
What's on the rock

Beraunite

Formula: 
Fe2+Fe3+5(PO4)4(OH)5·6H2O
Group Parent: 
Beraunite Group
Strunz: 
8.DC.27
Crystal System: 
Monoclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Hrbek Mine, Svatá Dobrotivá (St Benigna), Beroun (Beraun), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

Stewartite

Formula: 
Mn2+Fe3+2(PO4)2(OH)2·8H2O
Strunz: 
8.DC.30
Hardness: 
0.0
Streak: 
White
Type Locality: 
Stewart Mine (MS 6162; Stewart Lithia mine), Tourmaline Queen Mountain (Pala Mtn; Queen Mtn), Pala, Pala District, San Diego Co., California, 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