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Ilvaite With Prase Quartz

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QRI769879

Ilvaite With Prase Quartz

Classic Locality

Description Tabs

Description
Locality: 
Megalo Livadi, Serifos Island, Milos, South Aegean, Greece
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.5 × 5 × 2.3 cm
Largest Crystal: 
0.70cm
Weight: 
17.00gr
Description

Choice miniature of oldtimer ilvaite on prase quartz from the classic Serifos island, Greece. Ilvaite spray nicely diverts, partly laid on quartz crystals. Main ilvaite is perfectly terminated, with charcoal black color, medium, almost sericeous lustre, and proudly stands out of the main spray. Prases show a good pyramid and a rather unclear prism. Specimen matrix is fibrous hedenbergite of pale brown-green color.

Acquired from a Greek collection in December, the specimen is over 30 years old, hence a few peripheral bruises. Collecting specimens in Serifos is off-limits.

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

Prase

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Hardness: 
0.0

Quartz

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

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