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Ilvaite & Quartz

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WND799403

Ilvaite & Quartz

Classic Locality

Description Tabs

Description
Locality: 
Nikolayevskiy Mine, Dalnegorsk, Primorskiy Kray, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 2.1 × 2.7 cm
Description

A fine single, raven-black and highly lustrous crystal of ilvaite perched on quartz. The doubly terminated ilvaite is showing a fine striation on all faces, is sharp edged and excellent terminated. One imperfection.

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
Wendel Minerals

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