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November 24, 2014

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Quartz (var: Rock Crystal)

Locality: McEarl Ridge Mine (Diamond Drill Carbon Co. No. 4 Mine), Blue Springs, Garland Co., Arkansas, USA

Posted by: Rock Currier

Photomicrograph of the surface of a prism face of a quartz crystal from the McEarl Ridge mine. The hexagonal growth features as well as the square ones are unusual. How are they to be explained. The squares that were examined were less than .5mm. Pictures are courtesy of Dr. George Rossman of California Institute of Technology.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. 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 thousands 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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