Zincochromite

Zincochromite is a mineral; formula ZnCr₂O₄, It is the zinc analogue of Chromite, hence the name. Discovered in 1987 in South Karelia, Russia.

Physical Properties of Zoncochromite.

Color: Brownish Black.
Diaphaniety: Translucent to Opaque. Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Hardness: 5.8. Luster: Sub Metallic.

Calculated Properties of Zincochromite. Electron Density: Relectron=5.02 gm/cc. Note: Zincochromite =5.32 gm/cc.] Fermion Index = 0.05395.

Boson Index = 0.94605. Photoelectric: PEZincochromite = 24.45 barns/electron.

U=PEZincochromite x relectron= 122.61 barns/cc.

Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units).

Zincochromite is Not Radioactive

References

* [http://webmineral.com/data/zincochromite.shtml Webmineral data]
* [http://www.mindat.org/min-4412.html Mindat.org]