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
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
amounts include iron oxides and iron-titanium oxides, such as magnetite, ulvöspinel, and ilmenite. Because of the presence of such oxide minerals, basalt...
70 KB (7,827 words) - 06:42, 4 October 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...
8 KB (838 words) - 08:05, 20 September 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
actinolite) Uchucchacuaite Uklonskovite Ulexite Ullmannite Ulrichite Ulvöspinel Umangite Umbite Umohoite Ungemachite Upalite Uraninite Uranocircite-II...
42 KB (2,782 words) - 13:55, 7 October 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
and 1. At the x = 0 end is magnetite, while the x = 1 composition is ulvöspinel. The titanomagnetites have an inverse spinel crystal structure and at...
6 KB (518 words) - 04:07, 17 December 2023
can form solid solutions with similarly structured minerals, including ulvospinel (Fe2TiO4) and magnesioferrite (MgFe2O4). Titanomagnetite, also known as...
51 KB (5,368 words) - 10:16, 2 July 2024