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Langite & Chalcoalumite

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FNW73902

Langite & Chalcoalumite

Description Tabs

Description
Locality: 
Piedmont, Italy
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1.8 × 0.7 cm
Description

Blue langite crystals on matrix with pale greenish blue aggregates of the rare sulfate chalcoalumite.

Mineral Data
What's on the rock

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

Chalcoalumite

Formula: 
CuAl4(SO4)(OH)12·3H2O
Strunz: 
7.DD.75
Crystal System: 
Monoclinic
Hardness: 
2.5
Streak: 
White
Type Locality: 
Copper Queen Mine (Halero Mine), Queen Hill, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA
Fine Minerals World