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Ilvaite & Quartz

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ESM501786

Ilvaite & Quartz

Description Tabs

Description
Locality: 
Dalnegorsk, Primorskiy Kray, Russian Federation
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.7 × 2.8 cm
Description

A cluster of sharp lustrous jet-black ilvaite crystals with quartz crystals

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