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Santabarbaraite Psm Vivianite & Selenite On Hydrogoethite

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CLB176563

Santabarbaraite Psm Vivianite & Selenite On Hydrogoethite

Pseudomorph

Description Tabs

Description
Locality: 
Kerch Peninsula, Crimea, Ukraine
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 4 × 3 cm
Description

Brown platy santabarbaraite crystals pseudomorph after vivianite with waterclear, colorless selenite (gypsum) crystals on hydrogoethite (black with iridescent colors) and limonite replacing a fossil shell. Practically a 'double-pseudomorph'. Rare.

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

Selenite

Variety Of: 

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Hardness: 
0.0

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