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Vauxite & Sigloite

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SKY207025

Vauxite & Sigloite

Rare Mineral-Classic locality
Type Locality

Description Tabs

Description
Locality: 
Siglo Veinte Mine, Llallagua, Rafael Bustillo, Potosi Department, Bolivia
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1.3 × 0.8 cm
Description

<p>Sharp crystals of blue vauxite associated to minoritary tan sigloite crystal aggregates from the type and most classic locality for the mineral. Vauxite has only been found in 4 localities worldwide whereas sigloite in only 3 localities worldwide.</p>

Mineral Data
What's on the rock

Vauxite

Formula: 
Fe2+Al2(PO4)2(OH)2·6H2O
Strunz: 
8.DC.35
Hardness: 
3.5
Streak: 
White
Type Locality: 
Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province (Bustillos Province), Potosí Department, Bolivia

Sigloite

Formula: 
Fe3+Al2(PO4)2(OH)3·7H2O
Strunz: 
8.DC.30
Hardness: 
3.0
Type Locality: 
Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province (Bustillos Province), Potosí Department, Bolivia