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Varlamoffite & Wavellite

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SHS148974

Varlamoffite & Wavellite

Description Tabs

Description
Locality: 
Gunheath Pit, St Austell, Cornwall, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.5 × 2.8 cm
Description

Yellow varlamoffite and green wavellite on matrix

Mineral Data
What's on the rock

Varlamoffite

Formula: 
(Sn,Fe)(O,OH)2
Strunz: 
4.DB.05
Hardness: 
6 - 6.5
Colour: 
Yellow
Streak: 
Light Yellow
Type Locality: 
Kalima, Maniema, Democratic Republic of Congo (Zaïre)

Wavellite

Formula: 
Al3(PO4)2(OH,F)3·5H2O
Strunz: 
8.DC.50
Hardness: 
3.5 - 4.0
Streak: 
White.
Type Locality: 
High Down Quarry, Filleigh, North Devon, Devon, England, UK