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ZHANG Yu-lian, JIA Qun-zi, SONG Zhong-bao, et al. Contrastive Study on Features of Ore-forming Rock Mass between Area A Porphyry Type and Area B Skarn Type in Ka'erqueka Copper Molybdenum Deposit in Qinghai Province[J]. Northwestern Geology, 2014, 47(4): 114-122.
Citation: ZHANG Yu-lian, JIA Qun-zi, SONG Zhong-bao, et al. Contrastive Study on Features of Ore-forming Rock Mass between Area A Porphyry Type and Area B Skarn Type in Ka'erqueka Copper Molybdenum Deposit in Qinghai Province[J]. Northwestern Geology, 2014, 47(4): 114-122.

Contrastive Study on Features of Ore-forming Rock Mass between Area A Porphyry Type and Area B Skarn Type in Ka'erqueka Copper Molybdenum Deposit in Qinghai Province

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  • Received Date: July 29, 2014
  • Revised Date: October 19, 2014
  • Available Online: July 28, 2022
  • Published Date: December 04, 2014
  • Ka'erqueka Cu deposit in Qinghai province has porphyry-skarn-hydrothermal metallogenic characteristics of the series. The orefield is divided into three areas as A, B and C, among which area A is mainly porphyry mineralization, area B is mineralization of skarn type. Copper polymetallic deposit primarily originated in the contact area between granodiorite and porphyritic monzonitic granite and Cambrian-Ordovician Tanjianshan Group, that is skarn ore belt and porphyry copper deposit. By comparison of mineral assemblage and petrological geochemical characteristics, the porphyritic monzonitic granite of Area B in Ka'erqueka deposit is a product of the early stage of Caledonian subduction collision. Both porphyry mineralization in porphyritic monzonitic granite of Area A and skarn mineralization in granodiorite of Area B are products of subduction collision orogenic stage in late Triassic Indo-Chinese epoch, that produced a typical porphyry deposit system, then superimposed on early mineralization in Caledonian period, and finally the larger copper molybdenum deposit was formed.
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