A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Gahnite (ZnAl2O4) with sphalerite (ZnS) |
|---|---|
| Description | Gahnite is one of the rarer members of the spinel group of minerals, an important group of oxides. Gahnite (ZnAl2O4) forms in some granitic pegmatites, zinc deposits and in skarns. In this photo it appears as large dark gray crystals. It is accompanied by sphalerite (ZnS, the brownish mineral). Gahnite is an important ore of zinc, as is sphalerite. |
| Location | USA ▹ New Jersey. Near Franklin. |
| Photographer | Nessa Eull. 2001-04-19. |
| Collection | University of North Dakota Mineralogy Collection #421. |
| Key words | gahnite, spinel, sphalerite, New Jersey |
| Tech details | 670 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 363 |
 | |