Cohenite is a naturally occurring iron mineral, Co. This forms a hard, shiny, silver mineral which was named by E. Weinschenk in 1889 after the German mineralogist Emil Cohen, who first described and analysed material from the Magura meteorite found near Slanica , Slovakia Cohenite is found in rod-like crystals in iron meteorites
On Earth cohenite is stable only in rocks which formed in a strongly reducing deposits. Such conditions existed in some places where molten magmas invaded coal in Greenland in Germany
Associated minerals include native iron, schreibersite , troilite
Similar iron carbides occur also in technical iron alloys and are called cementite.