Bixbyite is a manganese iron oxide mineral with chemical formula: (Mn,Fe)2O3. The iron/manganese ratio is quite variable and many specimens have almost no iron. It is a metallic dark black with a Mohs hardness of 6.0 - 6.5. It is a somewhat rare mineral sought after by collectors as it typically forms euhedral isometric crystals exhibiting various...
Found on
http://en.wikipedia.org/wiki/Bixbyite
(Manganese Iron Oxide) Bixbyite is a rare mineral, but is still well known among collectors. It forms well formed isometric crystals, usually highly modified cubes. It also is associated with several interesting and attractive minerals and has a nice high luster. For these reasons bixbyite is popular among collectors although it...
Found on
https://www.encyclo.co.uk/local/23719
No exact match found.
