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北衙金多金属矿床是三江特提斯成矿域中喜马拉雅期斑岩-矽卡岩型矿床的典型代表。以斑岩体为中心,北衙矿区向外可划分为产于斑岩体内部的斑岩型铜金矿;产于斑岩与北衙组碳酸盐地层接触带的矽卡岩型金铜铁矿;产于围岩层间界面或破碎带中的低温热液型金、铅、锌、银多金属矿;以及外生风化形成的砂砾粘土型金铁矿(和文言,2012,2014)。本文尝试通过对北衙金多金属矿区的钾质斑岩、蚀变斑岩、斑岩型矿石、矽卡岩、矽卡岩矿石、灰岩内热液脉型矿石、蚀变灰岩到灰岩的稀土元素组成的对比研究,
The Beiya gold polymetallic deposit is a typical representative of the Himalayan porphyry-skarn deposits in the Sanjiang Tethys metallogenic area. Taking porphyry as the center, the Beiya mining area can be divided into porphyry-type copper-gold deposits in the porphyry body outward. The skarn-type gold-copper deposits in the contact zone between the porphyry and Beiya carbonate formations Iron ore; low-temperature hydrothermal gold, lead, zinc and silver polymetallic ores produced in the inter-rock interfaces or crustal zones; and gravel clay-type gold-iron mines formed by exogenous weathering (Wenhua, 2012, 2014) . This paper attempts to pass through the study on the characteristics of the deposits of potash porphyry, alteration porphyry, porphyry ore, skarn, skarn ore, limestone hydrothermal vein type ore, altered limestone to limestone in Beiya gold polymetallic deposit The comparative study of the composition of rare earth elements,