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Coesite & Stishovite

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UVM869641

Coesite & Stishovite

Type Locality

Description Tabs

Description
Locality: 
Barringer Crater, Coconino County, Arizona, United States of America
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.7 × 0.9 cm
Description

Fine grained intergrowths of coesite and stishovite, high pressure silica polymorphs formed by meteorite impact.   This is the type locality for both species.

Mineral Data
What's on the rock

Coesite

Formula: 
SiO2
Strunz: 
4.DA.35
Crystal System: 
Monoclinic
Hardness: 
7.5 - 8.0
Type Locality: 
Meteor Crater (Barringer Crater), Winslow, Coconino Co., Arizona, USA

Stishovite

Formula: 
SiO2
Strunz: 
4.DA.40
Hardness: 
7.5 - 8.0
Type Locality: 
Meteor Crater (Barringer Crater), Winslow, Coconino Co., Arizona, USA

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