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Alstonite

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Alstonite

Type Locality

Description Tabs

Description
Locality: 
Brownley Hill Mine, Nenthead, Cumbria, United Kingdom
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 1.8 × 1.2 cm
Description

Intergrown sharp pointed scalenohedral alstonite crystals

Mineral Data
What's on the rock

Alstonite

Formula: 
BaCa(CO3)2
Strunz: 
5.AB.35
Crystal System: 
Triclinic
Hardness: 
4.0 - 4.5
Streak: 
White
Type Locality: 
Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK