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Santabarbaraite Psm Vivianite & Goethite

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GPM721040

Santabarbaraite Psm Vivianite & Goethite

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Description
Locality: 
Chernomorsky Mine, Kerchenskoe Deposit, Kerch Peninsula, Crimea, Ukraine
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 2.9 × 2.8 cm
Description

A rarely seen specimen of the hydrated iron phosphate santabarbaraite from the Kerchenskoe deposit in Ukraine - the most famous locality for the species. The crystals are pseudomorph after vivianite and are set on Fe-Mn ore. With botryoidal goethite growth.

971

Mineral Data
What's on the rock

Santabarbaraite

Formula: 
Fe3+3(PO4)2(OH)3·5H2O
Strunz: 
8.CE.80
Hardness: 
0.0
Type Locality: 
Santa Barbara lignite District, Cavriglia, Valdarno (Val d'Arno), Arezzo Province, Tuscany, Italy...

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

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