A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Corundum |
|---|---|
| Description | Corundum, Al2O3 (aluminum oxide), is a very hard mineral. Its hardness can be partially attributed to the strong and short oxygen-aluminum bonds. This specimen, 2 cm across, is not particularly attractive, although it does show corundum's hexagonal symmetry. Beautiful gem varieties of corundum are ruby and sapphire. |
| Photographer | Nessa Eull. 2001-08-07. |
| Collection | University of North Dakota Mineralogy Collection. |
| Key words | corundum |
| Tech details | 261 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 1438 |
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