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Ilvaite & Calcite

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ESM802347

Ilvaite & Calcite

Description Tabs

Description
Locality: 
Dalnegorsk, Primorskiy Kray, Russian Federation
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 3 cm
Description

A cluster of sharp lustrous black ilvaite crystals with calcite crystals on matrix

Mineral Data
What's on the rock

Ilvaite

Formula: 
CaFe2+2Fe3+(Si2O7)O(OH)
Strunz: 
9.BE.07
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Torre di Rio - Santa Filomena area (Monte della Torre), Rio Marina, Elba Island, Livorno Province, Tuscany, Italy

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White