A Geoscience Digital Image Library

TitleRuby (corundum) with green zoisite
DescriptionRuby 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.
LocationAustralia ▹ Tanzania
PhotographerNessa Eull. 2001-08-07.
CollectionUniversity of North Dakota Mineralogy Collection #4005.
Key wordsRuby, Corundum, Zoisite, Tanzania
Tech details471 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number1434