Porphyry type deposits associated with adakite magmas: Case study of porphyry Cu-Au and Cu-Mo deposits in mongolia

Author

Gerel, O. ; Batkhishig, B. ; Munkhtsengel, B. ; Chimedtseren, A.

Author_Institution

Sch. of Geol. & Pet. Eng., Mongolian Univ. of Sci. & Technol., Ulaanbaatar, Mongolia

Volume

1

fYear

2013

fDate

June 28 2013-July 1 2013

Firstpage

537

Lastpage

541

Abstract

Major porphyry type deposits are spatially and temporally associated with adakitic magmas. Such magmas show high Sr/Y, high Al₂O₃, and high La/Yb geochemical signature. Case study of late Devonian Oyu Tolgoi and Carboniferous Shuteen deposits show that porphyry Cu-Au are associated with oxidized, high Sr/Y mafic-inermediate adakitic magma. Magma associated with Erdenet and Bayan Uul porphyry Cu-Mo deposits has shown high Sr/Y signature through a combination of fractionation, crustal melting and assimilation. Long-lived magmatic-hydrothermal system is potential for large porphyry deposits.

Keywords

geochemistry; magma; minerals; Bayan Uul porphyry copper-molybdenum deposit; Carboniferous Shuteen deposit; Erdenet porphyry copper-molybdenum deposit; Mongolia; crustal melting; geochemical signature; late Devonian Oyu Tolgoi deposit; long-lived magmatic-hydrothermal system; mafic-inermediate adakitic magma; porphyry copper-gold deposit; porphyry copper-molybdenum deposit; porphyry type deposits; strontium-yttrium signature; Abstracts; Geology; Gold;

fLanguage

English

Publisher

ieee

Conference_Titel

Strategic Technology (IFOST), 2013 8th International Forum on

Conference_Location

Ulaanbaatar

Print_ISBN

978-1-4799-0931-5

Type

conf

DOI

10.1109/IFOST.2013.6617000

Filename

6617000