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Metavivianite

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TBM888792

Metavivianite

Classic Locality

Description Tabs

Description
Locality: 
Kerch Peninsula, Crimea, Ukraine
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 4 × 4 cm
Weight: 
140.00gr
Description

Fine example of dark green/blue radiating metavivianite crystals up to 10 mm long on oolitic limonite matrix set unter  a pliocenic fossilized mollusc bivalves shell.

Mineral Data
What's on the rock

Metavivianite

Formula: 
Fe2+Fe3+2(PO4)2(OH)2·6H2O
Strunz: 
8.DC.25
Hardness: 
1.5 - 2.0
Type Locality: 
Big Chief Mine (Johnson pegmatite), Glendale, Keystone District, Pennington Co., South Dakota, USA