Image: Quartz-46809
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Description: Quartz (Var.: Chalcedony) Locality: Chihuahua, Mexico (Locality at mindat.org) A geode (basically a bubble in the earth) of silky, botryoidal chalcedony from Mexico, acquired by Ed Ruggiero (according to his index card) in 1973. 13.4 x 12.0 x 7.7cm
Title: Quartz-46809
Credit: http://www.mindat.org/photo-46809.html
Author: Robert M. Lavinsky
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: https://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes
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