Karelianite is an rare mineral, a natural form of vanadium(III) oxide, V₂O₃. In terms of chemistry it is vanadium-analogue of hematite, corundum,

eskolaite Eskolaite is a rare chromium oxide mineral (chromium(III) oxide Cr2O3). Discovery and occurrence It was first described in 1958 for an occurrence in the Outokumpu ore deposit of eastern Finland. It occurs in chromium bearing tremolite skarns, me ...

tistarite Tistarite is an exceedingly rare mineral with the formula Ti2O3, thus being the natural analogue of titanium(III) oxide.Mindat, Tistarite, http://www.mindat.org/min-38695.html In terms of chemistry it is the titanium-analogue of hematite, corundum ...

bixbyite 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 ...

avicennite Avicennite ( thallium(III) oxide) is an oxide mineral. It was discovered around the Dzhuzumli village, Samarqand, Uzbekistan. It is named after Avicenna, a Persian doctor and polymath. See also *List of minerals *List of minerals named after peopl ...

, and yttriaite-(Y). The name comes from Karelia, a region on the Finnish-Russian border. It may be associated with magnesium-rich rocks.

References

Oxide minerals Vanadium minerals Hematite group Trigonal minerals {{Mineral-stub