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MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 2" class=MsoNormal>mso-bidi-font-family: 宋体; mso-font-kerning: 18.0pt" lang=EN-US>Adakite in Xiaosigou Porphyry Copper-Molybdenum Deposit, ml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />me w:st="on">Hebeime> Province: Age, Geochemical Characteristics and Geological Implicationsml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

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MARGIN: 0cm 0cm 0pt" class=MsoNormal>The Xiaosigou porphyry deposit occurs in the northern margin of ml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />North China craton, which belongs to the East Circum-Pacific metallogenic domain. The Xiaosigou pluton is comprised of tonalite and monzonitic granite, which are both I-type granites, with the mineral assemblage being plagioclase+ amphibole+ quartz+ potassium feldspar± biotite± pyroxene+ some opaque minerals. The research suggest that the Xiaosigou pluton is extremely similar to adakite. The primitive magma of the Xiaosigou pluton was derived from the partially melted lower crust as well as some mantle materials. The Xiaosigou large-size porphyry copper-molybdenum deposit is genetically in close connection with adakite and the tectonic environment of the northern edge of North China craton. ml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

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