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Ilvaite

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QRI806266

Ilvaite

Former collection Christian Mavris
Classic Locality

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Description
Locality: 
Torre di Rio, Rio Marina, Elba, Livorno Province, Tuscany, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 3.2 × 1.7 cm
Largest Crystal: 
1.00cm
Weight: 
20.00gr
Description

A couple of parallel textbook jet black ilvaite on a massive ilvaite matrix specimen. The two crystals display a pretty good lustre for both the specie and the locality, and besides some peripheral bruises, the specimen is rich and in good conditions. The terminations display the typical 'catting' effect that occurs when ilvaite grows together with hairy hedenbergite (now gone).

Quite an appealing oldtimer, in my collection since almost 10 years.

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

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