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Alstonite Baryte & Sphalerite

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CSW128938

Alstonite Baryte & Sphalerite

Pseudomorph

Description Tabs

Description
Locality: 
Nenthead, Cumbria, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.5 × 5.2 × 3.9 cm
Largest Crystal: 
0.80cm
Description

A super locality specimen showing matrix with bright white baryte pseudomorphs of alstonite crystals to 0.8cm on a bed of deep red sphalerite 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

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Seller Information

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Seller's terms and conditions

Thank you for viewing my auctions. It goes without saying that maintaining high standards in both specimen quality and customer service are extremely important to me. If for any reason you are not happy with any aspect of your transaction then please let me know as soon as possible, ideally within 1 week of receiving your specimen. I will happily do all in my power to resolve the situation to your satisfaction. If your specimen is damaged upon delivery simply send me some photos to verify this and I'll provide you with a full refund or a replacement specimen, whichever you prefer. 

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