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Oxygen Isotopic Characteristics of Granitic Intrusions Related to Haobugao Zn‐Pb‐Cu‐Sn Skarn Deposit, East Inner Mongolia, China
Author(s) -
Wang Jingbin,
Wang Lijuan,
Wang Yuwang,
Li Tiejun,
Shimazaki Hidehiko
Publication year - 2004
Publication title -
resource geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 43
eISSN - 1751-3928
pISSN - 1344-1698
DOI - 10.1111/j.1751-3928.2004.tb00201.x
Subject(s) - skarn , geology , geochemistry , hydrothermal circulation , quartz , meteoric water , δ34s , inner mongolia , intrusion , granitic rock , magmatic water , isotopes of oxygen , mineralogy , china , fluid inclusions , seismology , paleontology , political science , law
. Granitic rocks related to the formation of Haobugao Zn‐Pb‐Cu‐Sn skarn deposit, Inner Mongolia, China, show unusual low whole‐rock δ 18 O values down to ‐8.8 % (V‐SMOW), whereas separated quartz crystals from those rocks give positive δ 18 O values of+4.1 to +9.9 %. Chemical analyses and microscopic observation of those granitic rocks confirm that they suffered hydrothermal alteration. Some skarn specimens and quartz from the Haobugao deposit also show negative δ 18 O values. The isotopic evidence indicates that intensive meteoric water circulation occurred at the time of granitic intrusion, and caused the pervasive hydrothermal alteration of granitic rocks and the precipitation of skarn deposit in this area.