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Clinoferrosilite

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SMM712484

Clinoferrosilite

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Description
Locality: 
Sant'Antioco, South Sardinia Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 1 × 3 cm
Description

Very rich miniature of clinoferrosilite.

The clinoferrosilite, Pyroxene Group - Clinopyroxene Subgroup, is a clinopyroxene dimorph of ferrosilite and isostructural with clinoenstatite that has rarely been found in single euhedral crystals.
Recently, some old samples (personally collected 2003), have been definitively analyzed and classified. In this specimen there are a  multitude of clinoferrosilite wonderful, sharp crystals, from green-bottle to dark green-black color and even reddish, together with small, beautiful pink crystals of amethyst, all stay on a bed of colorless-milky sanidine crystals. I've not found any news or photos of crystals so clear in any part of the world and they are probably the best known crystals. A very good sample.

Boxed with Label
Mineral Data
What's on the rock

Clinoferrosilite

Formula: 
Fe2+SiO3
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.10
Hardness: 
5.0 - 6.0
Streak: 
white
Type Locality: 
Obsidian Cliff, Yellowstone National Park, Park Co., Wyoming, USA

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