Origin of the Mo-bearing Xiaoshuijing Syenogranite in the Tengchong Terrane, SW China

Hao Zou, Hua Wen Cao, Leon Bagas, Yun Hui Zhang, Shou Ting Zhang, Qiang Zhang, Hang Liu, Yang Li

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The Xiaoshuijing Syenogranite is the host of Mo mineralisation recently discovered in the Tengchong Terrane of southwestern China. Here, we present new zircon U-Pb ages and molybdenite Re-Os ages, whole-rock geochemical data, and zircon Hf isotopic data for the Xiaoshuijing Syenogranite hosting disseminated Mo mineralisation. The syenogranite's mineralogical and geochemical characteristics indicate it is a high-K, alkaline, and peraluminous granite. LA-ICP-MS analysis of zircon yields an age of 65 ± 1 Ma (n = 14, MSWD = 2.1), and yields negative zircon ε Hf (t) values ranging from −18.23 to −12.92, interpreted to have a crustal source. The Re-Os Mo age of 64 ± 2 Ma (n = 4, MSWD = 2.2) for the mineralisation is the same as the syenogranite's age, within error. The geochemistry also indicates that the syenogranite is related to a thickened crust resulting from the eastward subduction of the Neo-Tethyan oceanic lithosphere shortly before the collision of the Indian and Eurasian continental crusts.

Original languageEnglish
Pages (from-to)258-272
Number of pages15
JournalOre Geology Reviews
Volume105
DOIs
Publication statusPublished - 1 Feb 2019

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Bearings (structural)
terrane
zircon
mineralization
Geochemistry
molybdenite
oceanic lithosphere
Rocks
continental crust
subduction
granite
collision
geochemistry
crust
rock

Cite this

Zou, Hao ; Cao, Hua Wen ; Bagas, Leon ; Zhang, Yun Hui ; Zhang, Shou Ting ; Zhang, Qiang ; Liu, Hang ; Li, Yang. / Origin of the Mo-bearing Xiaoshuijing Syenogranite in the Tengchong Terrane, SW China. In: Ore Geology Reviews. 2019 ; Vol. 105. pp. 258-272.
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abstract = "The Xiaoshuijing Syenogranite is the host of Mo mineralisation recently discovered in the Tengchong Terrane of southwestern China. Here, we present new zircon U-Pb ages and molybdenite Re-Os ages, whole-rock geochemical data, and zircon Hf isotopic data for the Xiaoshuijing Syenogranite hosting disseminated Mo mineralisation. The syenogranite's mineralogical and geochemical characteristics indicate it is a high-K, alkaline, and peraluminous granite. LA-ICP-MS analysis of zircon yields an age of 65 ± 1 Ma (n = 14, MSWD = 2.1), and yields negative zircon ε Hf (t) values ranging from −18.23 to −12.92, interpreted to have a crustal source. The Re-Os Mo age of 64 ± 2 Ma (n = 4, MSWD = 2.2) for the mineralisation is the same as the syenogranite's age, within error. The geochemistry also indicates that the syenogranite is related to a thickened crust resulting from the eastward subduction of the Neo-Tethyan oceanic lithosphere shortly before the collision of the Indian and Eurasian continental crusts.",
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Origin of the Mo-bearing Xiaoshuijing Syenogranite in the Tengchong Terrane, SW China. / Zou, Hao; Cao, Hua Wen; Bagas, Leon; Zhang, Yun Hui; Zhang, Shou Ting; Zhang, Qiang; Liu, Hang; Li, Yang.

In: Ore Geology Reviews, Vol. 105, 01.02.2019, p. 258-272.

Research output: Contribution to journalArticle

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AU - Cao, Hua Wen

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AU - Zhang, Shou Ting

AU - Zhang, Qiang

AU - Liu, Hang

AU - Li, Yang

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