The Talazhin plagiodunite–troctolite–anorthosite–gabbro massif (East Sayan): petrogeochemistry and ore potential

• Published in: Russian geology and geophysics Vol. 54; no. 2; pp. 166 - 180
• Main Authors: Yurichev, A.N., Chernyshov, A.I., Konnikov, A.E.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2013; Allerton Press
• Subjects: anorthosite; Asia; basalts; chemical composition; Commonwealth of Independent States; computer programs; copper ores; data processing; dunite; Eastern Sayan; Economic geology; feldspar group; fractional crystallization; framework silicates; gabbros; igneous and metamorphic rocks; igneous rocks; intrusions; Krasnoyarsk Russian Federation; layered intrusions; layered massifs; magmas; magmatic differentiation; metal ores; metals; mineral composition; nickel ores; olivine basalt; ore mineralization; P-T conditions; peridotites; Petrology; plagioclase; plagiodunites; platinum group; platinum ores; plutonic rocks; plutons; potential deposits; Russian Federation; Sayan; Siberia; silicates; Talazhin Massif; troctolite; troctolites; ultramafics; volcanic rocks; petrology; layered massifs; plagiodunites; troctolites; ore mineralization
• ISSN: 1068-7971; 1878-030X
• DOI: 10.1016/j.rgg.2013.01.004

The petrology and ore potential of the Talazhin massif located in northwestern East Sayan are studied. The internal structure of the intrusion, the petrographic composition of its rocks, and their metallogenic, petrostructural, and petrogeochemical features are considered. The probable temperature and chemical composition of the parental magma of the pluton were computed using the KOMAGMAT-3.52 program on the modeling of equilibrium crystallization. The obtained data indicate that the Talazhin massif is a rhythmically layered plagiodunite–troctolite– anorthosite–gabbro intrusion formed from low-Ti high-alumina olivine–basalt melt. It is promising for Cu–Ni–PGE mineralization.