| Title | Ruby (corundum) with green zoisite |
| Description | Ruby is the red variety of corundum, Al2O3 (aluminum oxide). Here it is seen in green zoisite (calcium aluminum silicate hydroxide). Zoisite, like all epidote minerals, is a structurally complex mineral having both single silicate tetrahedrons, SiO4, and double silicate tetrahedrons, Si2O7. |
| Location | Australia ▹ Tanzania |
| Photographer | Nessa Eull. 2001-08-07. |
| Collection | University of North Dakota Mineralogy Collection #4005. |
| Key words | Ruby, Corundum, Zoisite, Tanzania |
| Tech details | 471 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 1434 |
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