Jinling Fe-(Cu-Ni-Co) deposit, Linzi District, Zibo Prefecture, Shandong Province, China
Large-scale Fe-Zn skarn, hosted in Ordovician to Carboniferous limestones and shales that are intruded by plutons of the Jinling Complex. The plutonic rocks include mafic porphyritic gabbro, diorite, intermediate to mafic biotite diorite, hornblende diorite, pyroxene diorite, intermediate to alkalic diorite, and various dikes consisting of quartz syenite, pegmatite, lamprophyre, and diabase. The deposit occurs in the contact zone between carbonate rocks and plutons of the Jinling Complex. The orebodies are mostly lenticular. The ore minerals have mainly xenomorphic-hypidiomorphic, secondly idiomorphic-hypidiomorphic granular, and metasomatic relict textures. They occur mainly in masses and secondarily as disseminations. The deposit is interpreted as a W-Mo-Be skarn that formed during the Yanshan orogeny. The related granitoids have K-Ar isotopic ages of 110-128 Ma.
References- Daxin Li and Yiming Zhao (1997): Spinel-Corundum-Alkali Feldspatite within Jinling Complex, Shandong Province: the Discovery of a very Rare Al-rich Metasomatite. Acta Petrologica et Mineralogica 16(1), 44-49.
31 entries listed. 22 valid minerals.
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New Locality Added: Kawarau River, Cromwell, Central Otago, Otago, South Island, New ZealandFrom Steve Sorrell, 25th May 2013 11:39:40