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Clinoferrosilite

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SMM725525

Clinoferrosilite

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Description
Locality: 
Sant'Antioco, South Sardinia Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1 × 1 cm
Description

In this specimen there are a  multitude of clinoferrosilite sharp crystals, from green-bottle to dark green-black together with small, pink crystals of amethyst, all stay on a bed of colorless-milky sanidine crystals. Good sample.

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.

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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