Coalingite, Magnesite, Serpentine Group

Locality: Hunting Hill quarry (Rockville Crushed Stone Quarry; Travilah Quarry; Rockville Quarry; Bardon Stone Quarry; Aggregate Industries Quarry), Rockville, Montgomery Co., Maryland, USA

Coalingite on serpentine with small hydromagnesite crystals on left side of photo. This Coalingite specimen consists metallic-looking flakes. Usually the Coalingite at Hunting Hill is fiberous. Collected by J. Wingard 10-04 and in my personal collection. Specimen is approximately 12 cm across.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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