内蒙古商都项家村金矿床位于白云鄂博裂谷带东段南缘,金矿床的赋矿岩层为晚二叠世黑云母钾长花岗岩. 研究后确定2种矿体类型,分别为蚀变岩型和石英脉型. 区内的控矿构造为乌兰哈达—高勿素深大断裂带,该断裂具多期次和继承性的特征,是重要的导矿构造. 次级构造董家村背斜北翼的层间断裂带为矿质赋存提供了空间,是重要的容矿构造. 项家村金矿床的发现为裂谷带南缘找矿指明了方向.
Xiangjiacun Gold Deposit in Shangdu is located in the south edge of east section of Bayan Obo rift belt. The host strata are late Permian biotite moyites. Two orebody types are determined after study,namely the altered rock type and the quartz vein type. The main formation of mine are Halahuogete formation of the Mesoproterozoic Bay-an Obo Group, Baogedawula formation of the neogene pliocene, quaternary Pleistocene and the Holocene. Research shows that main ore-controlling structure in target zone is Wulanhada-Gaowusu deep fault which is characterized by multiple phases and succession and is an ore-conducting structure. The interlaminar fault in the north wing of the sec-ondary structure,Dongjiacun anticline,as an important ore-hosting structure,provides ore-depositing space. The discov-ery of Xiangjiacun Gold Deposit points the right direction for the prospecting work in the south edge of the rift.
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