A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Sard |
|---|---|
| Description | Sard is a yellow to brown agate. Agate is a cryptocrystalline (crystals too small to be seen even by a microscope) variety of quartz. These varieties are divided more by character than by color. These different variatites are often used as semi-precious gemstones and for decorative purposes. |
| Location | USA ▹ Colorado. Bijou Basin. |
| Photographer | Shannon Heinle. 2002-01-24. |
| Collection | University of North Dakota Mineralogy Collection #1645. |
| Key words | sard, agate, quartz, cryptocrystalline |
| Tech details | 475 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 2190 |
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