crystallized from some basalt-gabbro magmas are rich in the ulvöspinel component. The ulvöspinel component tends to oxidize to magnetite plus ilmenite during...
4 KB (294 words) - 18:58, 19 January 2024
amounts include iron oxides and iron-titanium oxides, such as magnetite, ulvöspinel, and ilmenite. Because of the presence of such oxide minerals, basalt...
69 KB (7,809 words) - 04:19, 9 September 2024
found in association with zircon, fluorapatite, ferro-ferri-katophrite, ulvöspinel, nepheline, chalcopyrite, phyrrotite, pyrite, natrolite, and chevkinite-(Ce)...
1 KB (107 words) - 08:48, 14 August 2024
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...
7 KB (749 words) - 16:22, 21 May 2024
actinolite) Uchucchacuaite Uklonskovite Ulexite Ullmannite Ulrichite Ulvöspinel Umangite Umbite Umohoite Ungemachite Upalite Uraninite Uranocircite-II...
42 KB (2,782 words) - 11:49, 1 September 2024
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...
15 KB (1,943 words) - 11:13, 15 July 2024
amphibole (often hornblende). Oxide minerals such as magnetite, ilmenite, or ulvospinel. Some sulfides and phosphates (mainly apatite) may also be present. Alkali...
4 KB (353 words) - 05:36, 25 August 2024
Name Symbol Name Symbol Name Symbol Name Symbol Name Symbol Uakitite Uak Ulvöspinel Uspl Uralolite Url Uranopolycrase Uplc Urvantsevite Urv Uytenbogaardtite...
180 KB (418 words) - 05:15, 30 June 2024
few percent, of iron-titanium oxides such as magnetite, ilmenite, and ulvospinel. Apatite, zircon, and biotite may also be present as accessory minerals...
19 KB (2,320 words) - 02:21, 7 September 2024
The crystallization sequence of oxide minerals such as magnetite and ulvospinel is sensitive to the oxygen fugacity of melts, and separation of the oxide...
10 KB (1,096 words) - 17:54, 14 August 2024