BH250-223
Title
BH250-223
Subject
Coesite Eclogite
Description
Major Minerals: quartz, muscovite, garnet, kyanite
Minor Mineral: rutile
Mineralogy Comments: former coesite, turned into low-P SiO2 polymorph: garnet radially fractures around where coesite used to be
Minor Mineral: rutile
Mineralogy Comments: former coesite, turned into low-P SiO2 polymorph: garnet radially fractures around where coesite used to be
Creator
Bereket Haileab
Source
From the rock collection of Bereket Haileab. Sample 223. Housed at Carleton College in Minnesota.
Contributor
John Goodge
Type
Thin section and hand sample
Relation
Collection
Citation
Bereket Haileab, “BH250-223,” BH250 Mineralogy Teaching Collection, accessed April 25, 2026, https://bereket-haileab.geology.sites.carleton.edu/items/show/294.