论文部分内容阅读
新疆希勒库都克铜钼矿床是一个形成于早石炭世晚期的斑岩型矿床。矿区黄铁矿稀土总量为0.64×10-6~317×10-6,轻稀土相对富集,重稀土较为平缓,(La/Yb)N为3.23~38.84,(La/Sm)N为1.85~8.15,(Gd/Lu)N为0.65~5.24;铕多表现为较明显负异常,δEu为0.47~0.64,铈多具弱的负异常,δCe为0.49~0.99。黄铁矿的微量和稀土元素配分曲线模式特征与含矿斑岩类似,表明二者具同源性;Co/Ni比值介于0.46~11.65之间,显示岩浆热液成因特征;Y/Ho比值主要集中在29.4~35.0之间,与含矿斑岩体相似,分布在球粒陨石值附近,表明成矿流体可能来源于含矿斑岩。希勒库都克铜钼矿区黄铁矿微量元素和稀土元素地球化学特征综合反映出它们是同一岩浆热液作用的产物,成矿流体来源于含矿斑岩体。文章的研究结果进一步佐证了该矿床的斑岩型矿床成因。
The Xileke Kuduk copper-molybdenum deposit in Xinjiang is a porphyry-type deposit formed in the late Early Carboniferous. The total content of rare earth in pyrite in the mining area is 0.64 × 10-6 ~ 317 × 10-6. The light rare earth is relatively enriched, the heavy rare earth is relatively flat, (La / Yb) N is 3.23 ~ 38.84, and La / Sm is 1.85 ~ 8.15, and (Gd / Lu) N is 0.65 ~ 5.24. Europium shows more obvious negative anomalies with δEu of 0.47 ~ 0.64, cerium with more weak negative anomalies and δCe of 0.49 ~ 0.99. The patterns of trace and rare earth elements distribution patterns of pyrite are similar to that of the porphyry-bearing porphyries, indicating that they have homology. The Co / Ni ratios range from 0.46 to 11.65, indicating the genetic characteristics of magmatic hydrothermal fluids. The Y / Ho ratio Mainly concentrated in the range of 29.4-35.0, similar to the ore-bearing porphyry bodies and distributed in the vicinity of chondrite values, indicating that ore-forming fluids may be derived from ore-bearing porphyries. The geochemical characteristics of trace elements and rare earth elements of pyrite in the Hiluxikudu copper-molybdenum ore area reflect that they are the products of the same magmatic hydrothermal fluid and the ore-forming fluid is derived from the ore-bearing porphyry. The results of the article further corroborate the genesis of the porphyry deposit of this deposit.