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Calcite On Witherite

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PCZ629049

Calcite On Witherite

Description Tabs

Description
Locality: 
Black Hills level, Black Hills, Arkengarthdale, North Yorkshire, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.5 × 2 cm
Description

A nice little specimen with reflective white calcite on witherite. Classic British locality.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Witherite

Formula: 
BaCO3
Strunz: 
5.AB.15
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 3.5
Streak: 
White
Type Locality: 
Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Peter Crozier Minerals