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Ferrostrunzite & Beraunite

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CSL560919

Ferrostrunzite & Beraunite

Rare Mineral

Description Tabs

Description
Locality: 
Gravel Hill Mine, Perranzauloe, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.4 × 2.3 cm
Description

Interesting phosphate mineralization with rare golden yellow acicular ferrostrunzite crystals in association with olive green sprays of beraunite. Nice little piece.

Ex-Stefan Weiß/München specimen, found of june 2015.

Mineral Data
What's on the rock

Ferrostrunzite

Formula: 
Fe2+Fe3+2(PO4)2(OH)2·6H2O
Strunz: 
8.DC.25
Hardness: 
4.0
Streak: 
White.
Type Locality: 
Raccoon Creek, Mullica Hill, Harrison Township, Gloucester Co., New Jersey, USA

Beraunite

Formula: 
Fe2+Fe3+5(PO4)4(OH)5·6H2O
Group Parent: 
Beraunite Group
Strunz: 
8.DC.27
Crystal System: 
Monoclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Hrbek Mine, Svatá Dobrotivá (St Benigna), Beroun (Beraun), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

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