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Heiyingshan Mine, Ejin Banner (Ejina Co.), Alxa League (Alashan Prefecture), Inner Mongolia Autonomous Region, China

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Name(s) in local language(s): 黑鹰山铁矿, 额济纳旗, 阿拉善盟, 内蒙古自治区, 中国
High-grade iron deposit, located in the northeastern part of the Hongshishan-Heiyingshan terrane within the Kazakhstan-Beishan plate. Iron mineralization occurs as massive blocks, stratoid layers, lenses and veins within Early Carboniferous dacite, rhyolite, dacitic lava and brecica of the Beishan Formation. The iron-bearing intermediate-acid volcanic sequences are cut by a number of Hercynian mafic and granitoid dykes and controlled by a number of NE- and EW-trending fractural or faulted zones. The individual iron orebodies, from 4 to 12 m in thickness, can be traced along a strike of 115-200 m, and for 100-200 m downdip. Several independent yttrium-rich orebodies were also recognized within the deposit. Although apatite predominates over iron-bearing minerals, no difference has been observed between iron and yttrium orebodies in such aspects as geological setting, wall rock, mineral assemblage and attitude. The ore-forming material might have been derived from a mixed source of depleted mantle- and crust-derived magma or fluids.

Mineral List

18 entries listed. 13 valid minerals.

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Fengjun Nie, Sihong Jiang, and Yan Liu (2005): Rare earth element features of apatite separated from the Heiyingshan high-grade iron deposit, Inner Mongolia. Acta Geoscientica Sinica 26(5), 435-442.

Fengjun Nie, Sihong Jiang, Yan Liu, and Peng Hu (2005): Sm-Nd isotopic dating of apatite separates from Heiyingshan high-grade iron deposit, Inner Mongolia. Mineral Deposits 24(2), 134-140.

Guixiang Meng, Qingtian Lü, Jiayong Yan, Yong Wang, Yueqing Yang, and Jinhua Zhao (2009): Iron metallogenic characteristics and prospecting potential of Beishan area, Inner Mongolia. Mineral Deposits 28(6), 815-829 (in Chinese with English abstract).

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