EAS368 Study Guide - Final Guide: Feldspar, Bushveld Igneous Complex, Apatite
21 Apr 2012
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Eas 368: ore deposits geology example final lecture. The exam usually offers a choice of 7 short-answer questions from which you should pick 5 to answer. Each question is worth 10% of the exam mark: what are the main ore minerals and economic metals mined from orthomagmatic (a) oxide and (b) sulfide deposits? (lucas, oxide deposits. Important ore minerals in orthomagmatic oxide deposits are chromite, magnetite, and ilmenite. Have stratiform siderophile elements and compatible lithophile elements (cr-pge-ti-fe) which are found within the above ore minerals. Chromitite (chromite bearing rock) can also occur in podiform deposits (typically ophiolites of back arc basin origin) Pge"s occur in stratiform chromite layers as arsenides, sulfides, antimonides, with some pt and. Primary ilmenite and magnetite deposits may have ti, Fe, and v which occur in layered gabbroic intrusions: sulfide deposits. Ore minerals are ni-sulfides (pentlandite), with pyrrhotite, chalcopyrite, and magnetite. Fe, s, o, ni are the main constituents.
