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Connellite Langite & Brochantite

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Connellite Langite & Brochantite

Description Tabs

Description
Locality: 
Wheal Friendly, St Agnes, Cornwall, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
4 × 5.5 × 2 cm
Description

Deep blue balls of microcrystalline connellite with flows of green brochantite and tiny sprays of light blue langite. Matrix is quartz & sphalerite.

Wonderful under a lens.

Comes with a 1990’s A. Fisher dealer label.

Rare location.

Mineral Data
What's on the rock

Connellite

Formula: 
Cu19(SO4)(OH)32Cl4·3H2O
Strunz: 
3.DA.25
Crystal System: 
Hexagonal
Hardness: 
3.0
Type Locality: 
Wheal Providence, Providence Mines, Carbis Bay, St Ives, St Ives District, Cornwall, England, UK

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

Brochantite

Formula: 
Cu4(SO4)(OH)6
Strunz: 
7.BB.25
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Mednorudyanskoye Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia...
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