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Ulvöspinel or
ulvite is an iron
titanium oxide mineral with formula: Fe2TiO4 or TiFe2+2O4. It
forms brown to
black metallic isometric crystals with a Mohs...
- can form
solid solutions with
similarly structured minerals,
including ulvospinel (Fe2TiO4) and
magnesioferrite (MgFe2O4). Titanomagnetite, also
known as...
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amounts include iron
oxides and iron-titanium oxides, such as magnetite,
ulvöspinel, and ilmenite.
Because of the
presence of such
oxide minerals, basalt...
- crystals.
Minor amounts of
oxide minerals such as magnetite, ilmenite, and
ulvöspinel, as well as some
sulfide minerals may also be present. On average, the...
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found in ****ociation with zircon, fluorapatite, ferro-ferri-katophrite,
ulvöspinel, nepheline, chalcopyrite, phyrrotite, pyrite, natrolite, and chevkinite-(Ce)...
- actinolite)
Uchucchacuaite Uklonskovite Ulexite Ullmannite Ulrichite Ulvöspinel Umangite Umbite Umohoite Upalite Uraninite Uranocircite-II Uranophane...
- few percent, of iron-titanium
oxides such as magnetite, ilmenite, and
ulvospinel. Apatite, zircon, and
biotite may also be
present as
accessory minerals...
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amphibole (often hornblende).
Oxide minerals such as magnetite, ilmenite, or
ulvospinel. Some
sulfides and
phosphates (mainly apatite) may also be present. Alkali...
-
where one Fe is +2 and two Fe's are +3, respectively. Trevorite: NiFe2O4
Ulvöspinel: TiFe2O4 Zinc ferrite: (Zn,Fe)Fe2O4
Chromium spinels: Chromite: FeCr2O4...
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grains of
intergrown magnetite and ilmenite,
formed by the
oxidation of
ulvospinel. Most
ilmenite is
mined for
titanium dioxide production.
Ilmenite and...
