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Cryptomelane

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HCH64588

Cryptomelane

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Description
Locality: 
Dry Gill Mine, Caldbeck Fells, Cumbria, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2 × 2 cm
Description

botryoidal black masses of kryptomelane with some crystals of campylite up to 3 mm on it.

Mineral Data
What's on the rock

Cryptomelane

Formula: 
K(Mn4+7Mn3+)O16
Strunz: 
4.DK.05a
Crystal System: 
Tetragonal
Hardness: 
5.0 - 6.5
Type Locality: 
Tombstone, Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

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