Magnesioferrite

Magnesioferrite is a magnesium iron oxide mineral, a member of the magnetite series of spinels. Magnesioferrite crystallizes as black metallic octahedral crystals. It is named after its chemical composition of magnesium and ferric iron. The density is 4.6 - 4.7 (average = 4.65), and the diaphaniety is opaque. Crystalline - Fine - Occurs as well-formed fine sized crystals. Massive - Granular - Common texture observed in granite and other igneous rock. Its hardness is 6-6.5 - Orthoclase-Pyrite and the luminescence is non-fluorescent. Its luster is metallic and its streak is dark red. Sources include from Vesuvius and Stromboli, Italy.

External links

* http://webmineral.com/data/Magnesioferrite.shtml
* http://www.mindat.org/gallery.php?min=2787
* http://un2sg4.unige.ch/athena/cgi-bin/minfich?s=MOSANDRITE

List of minerals