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Vivianite & Goethite

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RBR206684

Description Tabs

Description
Locality: 
Kerch Peninsula, Crimea, Ukraine
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4 × 3.5 cm
Description

This is a perfect specimen with superb crystals of vivianite in a vug of Limonite. The vivianite is perfect terminated with a max. crystalsize of 2,5 cm. All crystals are undamaged and show a fine green color and very high luster. Also the crystals are free standing which make the specimen even more attractive. Little choice specimen in perfect quality!

Mineral Data
What's on the rock

Vivianite

Formula: 
Fe2+3(PO4)2·8H2O
Strunz: 
8.CE.40
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0
Type Locality: 
Wheal Kind (Wheal Kine), West Wheal Kitty group, St Agnes, St Agnes District, Cornwall, England, UK

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany