Баргилтын төмрийн ордын магнетитийн хүдэржилт ба магнетит дэх сарнимал элементийн судалгаа
Keywords:
Bargilt, Magnetite, Sulfide, Trace element, SkarnAbstract
The Bargilt iron deposit is located in the Bor-Undur ore district of the South Kherlen-Buyant metallogenic belt of the Central-Eastern Mongolia metallogenic province. Tectonically, The Bargilt deposit is located in the Idermeg terrane which is mainly formed of marble, quartzite, conglomerate, sandstone and limestone containing archeachyathes and stromatolites. The deposit is hosted in shist, biotite gneiss, biotite-amphibolite gneiss, limestone and quartzite of the Neoproterozoic unclassified metamorphic complex and acidic volcanic rocks of the Lower-Middle Permian Burentsogt formation, and Quaternary sediments, and the Middle-Late Paleozoic unnamed intrusive complex, The Early Permian subvolcanic complex, and The Late Triassic-Early Jurassic Bor-Undur intrusive complex.
The Bargilt iron deposit is composed of four types magnetite ores such as the I rhombododecahedron magnetite, II massive magnetite, III magnetite with sphalerite, and IV magnetite with pyrite. The main discriminator elements for magnetite, this study focused on the chemical characteristics of magnetite to identify the origins of the iron ore deposit. This study investigated the trace element chemistry of the magnetite using inductively coupled plasma mass spectrometry. The Bargilt deposit is classified by their chemical characteristics as skarn/calcic skarn deposits, characterized by higher Al and Mn and lower Ni, Ti, with V being a signature of a skarn type deposit.
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