Imagine:USDA Mineral Quartz Crystal 93c3951.jpg
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USDA_Mineral_Quartz_Crystal_93c3951.jpg (640 × 422 pixel, file size: 58 KB, MIME type: image/jpeg)
Mineral Quartz Crystal
USDA Photo by: Ken Hammond
USDA Image Number: 93cs3951
Source: http://www.usda.gov/oc/photo/93cs3951.htm
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This image is a work of a United States Department of Agriculture employee, taken or made during the course of the person's official duties. As a work of the U.S. federal government, the image is in the public domain. |  |
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