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Tavagnascoite & Langite

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SMM735685

Tavagnascoite & Langite

Type Locality
Rare Mineral

Description Tabs

Description
Locality: 
Tavagnasco Mine, Tavagnasco, Torino Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.5 × 1 cm
Description

Many, tiny, white silky crystals of rare Tavagnascoite, from the type and only known locality together there are blue crystals of langite. With the tavagnascoite label of one of the authors.

Boxed with Label
Mineral Data
What's on the rock

Tavagnascoite

Formula: 
Bi4O4(SO4)(OH)2
Strunz: 
7.BB.35
Crystal System: 
Orthorhombic
Colour: 
Colourless

Langite

Formula: 
Cu4(SO4)(OH)6·2H2O
Strunz: 
7.DD.10
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Fowey Consols (incl. Wheal Treasure; Wheal Fortune; Wheal Chance), Tywardreath, St Austell District, Cornwall, England, UK

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