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Beaverite-(Cu) Bayldonite Carminite & Mimetite

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RHT692316

Beaverite-(Cu) Bayldonite Carminite & Mimetite

ex M.G.H. Merry collection
Classic Locality

Description Tabs

Description
Locality: 
Penberthy Croft Mine, St Hilary, Cornwall, United Kingdom
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 3 × 2.2 cm
Description

Yellowish beaverite-(Cu) with little spots of brown-red carminite, green bayldonite (and i guess some stronger green cornwallite and acicular, yellowish mimetite crystals.

A very rare combination from a classic British locality. Penberthy is the type lopcality of bayldonite.

Carminite, bayldonite and the probable cornwallite are not pictured.

Mineral Data
What's on the rock

Bayldonite

Formula: 
PbCu3(AsO4)2(OH)2
Strunz: 
8.BH.45
Crystal System: 
Monoclinic
Hardness: 
4.5
Type Locality: 
Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK...

Carminite

Formula: 
PbFe3+2(AsO4)2(OH)2
Strunz: 
8.BH.30
Crystal System: 
Orthorhombic
Hardness: 
3.5
Type Locality: 
Louise Mine, Bürdenbach, Altenkirchen, Wied Iron Spar District, Westerwald, Rhineland-Palatinate, Germany

Mimetite

Formula: 
Pb5(AsO4)3Cl
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Treue Freundschaft Mine, Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany
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