| 张乾.山东香夼斑岩型铅梓矿床的地球化学特征及成因探讨[J].地质找矿论丛,1990,(2):12-19 |
| 山东香夼斑岩型铅梓矿床的地球化学特征及成因探讨 |
| GEOCHEMICAL CHRACTERISTICS OF XIANGKUANG PORPHYRY LEAD-ZINK DEPOSIT IN SHANDONG PROVINCE AND DISCUSSION ON IT’S GENESIS |
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| DOI：10.6053/j.issn.1001-1412.1990.2. 002 |
| 中文关键词: 斑岩型铅锌矿床 地球化学特征 矿床成因 花岗闪长斑岩 |
| 英文关键词: |
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| 摘要点击次数: 1384 |
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| 中文摘要: |
| 香夼矿床是一个较为典型的斑岩型铅锌矿床,成矿母岩为燕山期花岗闪长斑岩,稀土元素呈现明显的Eu亏损,为地壳重熔型浅成、超浅成岩浆岩.矿床主要有用元素Pb、Zn、Cu、Ag、Au、S、Cd、Se、Te等均较高.矿床硫同位素δ34S值靠近零,铅同位素组成表明矿石铅来源于岩浆,矿石铅与岩浆岩岩石铅组成一致,主要为上地幔来源的铅,有少量地壳铅参与成矿.H、O同位素表明成矿流体为岩浆水,成矿温度在230-350℃之间,方铅矿、闪锌矿单矿物微量元素显示出与岩浆热液型铅锌矿床相同的元素组合. |
| 英文摘要: |
| Geotectonicaly, this deposit is located in the upperplate of the west pacific ocean plate’s subduction zone in which various porphyric ore deposits are developed. It is a typical porphyric lead-zink ore deposit. The enclosing rock is Yianshanian granodiorite porphyre with strong Eu depletion belonging to crustal remelting shallow——supershallow magmatic rock. Pb, Zn, Cu, Ag, Au, S, Cd and Se are the minable elements. δ34S values are concentrated about zero. Pb-isotopic data indicate that ore Lead is derived from magma. Ore Lead composition and magma Lead composition are similar showing that both are the crustal Lead. H and O isotopic data indicate that magmatie water is the ore fluid. Ore-forming temperature range is 230°-350℃. Micro-element composition of monominerals of galena and sphelerite is similar to that of magmatic hydrothermal Pb-Zn ore deposit. |
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