| Zincochromite | |
| Category: | Spinel group |
| Formula: | ZnCr2O4 |
| Imasymbol: | Zchr[1] |
| Strunz: | 4.BB.05 |
| Class: | Hexoctahedral (mm) H-M symbol: (4/m 2/m) |
| Symmetry: | Fdm |
| Unit Cell: | a = 8.32 Å; Z = 8 |
| Color: | Brownish black |
| Habit: | Zoned euhedral crystals with hexagonal outline |
| Mohs: | 5.8 |
| Luster: | Semimetallic |
| Streak: | Brown |
| Diaphaneity: | Opaque, translucent in thin slivers |
| Opticalprop: | Isotropic |
| Other: | Weakly paramagnetic |
| References: | [2] [3] [4] [5] |
Zincochromite is a zinc chromium oxide mineral with the formula ZnCr2O4. It is the zinc analogue of chromite, hence the name. It was first described in 1987 as an occurrence in a uranium deposit near Lake Onega, Russia.[4] It has also been reported from Dolo Hill, New South Wales, Australia, and from the Tarkwa Mine in the Ashanti gold belt of Ghana.[2]