A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Corundum |
|---|---|
| Description | Corundum, Al2O3 (aluminum oxide), is one of the hardest minerals. It is used as an abrasive and when gemmy as a gemstone (ruby or sapphire). The atoms in corundum bond in hexagonal patterns, so well formed corundum crystals, like the one shown, have a hexagonal shape. |
| Photographer | Darla Sondrol. 2001-08-07. |
| Collection | University of North Dakota Mineralogy Collection #3170. |
| Key words | corundum |
| Tech details | 295 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 1433 |
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