Fluid-rock interaction in the Qitianling granite and associated tin deposits, South China: Evidence from boron and oxygen isotopes

Kui Dong Zhao, Shao Yong Jiang, Eizou Nakamura, Takuya Moriguti, Martin R. Palmer, Shui Yuan Yang, Bao Zhang Dai, Yao Hui Jiang

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The behavior of boron and its isotopes in fluid-dominant processes and hydrothermal alteration of granites is examined using fresh and altered granite samples from the Qitianling granite and associated hydrothermal tin deposits in South China. Boron concentrations are highest in the fresh granite (37ppm) and depleted as a result of two stages of fluid mobility and fluid-rock interaction within the granite. Constraints provided both by δ11B and δ18O data suggest that the first stage was related to exsolution of aqueous fluids from the granite magma at a temperature of >450°C. This was followed by further boron depletion in the granite by hydrothermal circulation of meteoric water at lower temperatures (~350°C) and low water/rock ratios. The sensitivity of coupled boron and oxygen isotope systematics to these processes suggests that they can provide valuable constraints on of fluid mobility in granite and associated mineralization.

Original languageEnglish
Pages (from-to)243-248
Number of pages6
JournalOre Geology Reviews
Volume43
Issue number1
DOIs
Publication statusPublished - Dec 2011

Fingerprint

Tin deposits
Oxygen Isotopes
boron isotope
Boron
tin
oxygen isotope
granite
Rocks
Fluids
fluid
rock
boron
hydrothermal circulation
Water
exsolution
hydrothermal alteration
meteoric water
Isotopes
magma
isotope

Keywords

  • Boron and oxygen isotopes
  • Hydrothermal alteration
  • Qitianling granite
  • South China
  • Tin deposit

ASJC Scopus subject areas

  • Economic Geology
  • Geochemistry and Petrology
  • Geology

Cite this

Fluid-rock interaction in the Qitianling granite and associated tin deposits, South China : Evidence from boron and oxygen isotopes. / Zhao, Kui Dong; Jiang, Shao Yong; Nakamura, Eizou; Moriguti, Takuya; Palmer, Martin R.; Yang, Shui Yuan; Dai, Bao Zhang; Jiang, Yao Hui.

In: Ore Geology Reviews, Vol. 43, No. 1, 12.2011, p. 243-248.

Research output: Contribution to journalArticle

Zhao, Kui Dong ; Jiang, Shao Yong ; Nakamura, Eizou ; Moriguti, Takuya ; Palmer, Martin R. ; Yang, Shui Yuan ; Dai, Bao Zhang ; Jiang, Yao Hui. / Fluid-rock interaction in the Qitianling granite and associated tin deposits, South China : Evidence from boron and oxygen isotopes. In: Ore Geology Reviews. 2011 ; Vol. 43, No. 1. pp. 243-248.
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AU - Zhao, Kui Dong

AU - Jiang, Shao Yong

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AU - Moriguti, Takuya

AU - Palmer, Martin R.

AU - Yang, Shui Yuan

AU - Dai, Bao Zhang

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AB - The behavior of boron and its isotopes in fluid-dominant processes and hydrothermal alteration of granites is examined using fresh and altered granite samples from the Qitianling granite and associated hydrothermal tin deposits in South China. Boron concentrations are highest in the fresh granite (37ppm) and depleted as a result of two stages of fluid mobility and fluid-rock interaction within the granite. Constraints provided both by δ11B and δ18O data suggest that the first stage was related to exsolution of aqueous fluids from the granite magma at a temperature of >450°C. This was followed by further boron depletion in the granite by hydrothermal circulation of meteoric water at lower temperatures (~350°C) and low water/rock ratios. The sensitivity of coupled boron and oxygen isotope systematics to these processes suggests that they can provide valuable constraints on of fluid mobility in granite and associated mineralization.

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