A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Corundum form Mineral County, Nevada |
|---|---|
| Description | Corundum, Al2O3 (aluminum oxide), is the second hardest natural mineral known to science. The hardest mineral, diamond is still four times harder than corundum. The hardness of corundum can be partially attributed to the strong and short oxygen-aluminum bonds. These bonds pull the oxygen and aluminum atoms close together, making the crystal not only hard, but also quite dense for a mineral made up of two relatively light elements. |
| Location | USA ▹ Nevada ▹ Mineral |
| Photographer | Nessa Eull. 2001-08-06. |
| Collection | University of North Dakota Mineralogy Collection #366. |
| Key words | Corundum, Nevada |
| Tech details | 359 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 1427 |
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