| 王莉,张荣臻,杜保峰,李栋,茹朋,耿爱宾,袁稳,吕国营.河南省泌阳县付金川金红石矿床成矿时代及成因探讨[J].矿产勘查,2024,15(12):2187-2197 |
| 河南省泌阳县付金川金红石矿床成矿时代及成因探讨 |
| Discussion on metallogenic age and genesis of Fujinchuan rutile deposit in Biyang County, Henan Province |
| 投稿时间：2024-10-30 |
| DOI：10.20008/j.kckc.202412002 |
| 中文关键词: 金红石 LA-ICP-MS 金红石 U-Pb年龄 付金川 泌阳县 |
| 英文关键词: rutile LA-ICP-MS rutile U-Pb age Fujinchuan Biyang County |
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| 中文摘要: |
| 金红石是最具有经济价值的钛矿物，在军工航空、航天、航海、机械、化工、海水淡化、造纸、陶瓷等方面具有重要用途。金红石是自然界中较为稳定的矿物之一，在热液活动和角闪岩相变质级以下均能保持其化学稳定性，是研究变质作用和流体活动的理想矿物。为了研究秦岭—大别地区变质型金红石矿床的成因及年代特征，本文选取泌阳县付金川金红石矿床为研究对象，通过 LA-ICP-MS金红石 U-Pb测年及矿物微区测试进行系统研究。结果发现付金川矿床中的含钛矿物以金红石为主，TiO2含量为 95.6%~98.5%。 LA-ICP-MS金红石 U-Pb年代学获得加权平均年龄(283±26)Ma，暗示泌阳地区可能存在二叠纪的金红石成矿时间；Nb含量均大于 Zr含量(Nb/Cr为 1.76~42.88)，且 Nb＞800×10-6，表明付金川矿床中的金红石形成于变泥质岩，而非变镁铁质岩，属于壳幔混合来源。 |
| 英文摘要: |
| Rutile is the most ecnomically valuable mineral containing titanium. It has important applicationsin military aviation, aerospace, navigation, machinery, chemical industry, seawater desalination, paper making, ce.ramics and so on. Rutile is one of the relatively stable minerals in nature, which can maintain its chemical stabilitybelow hydrothermal activity and amphibole facies metamorphism, and is an ideal mineral for studying metamor.phism and fluid activity. In order to study the genesis and chronological characteristics of metamorphic rutile depos.its in Qinling-Dabie area, In this paper, LA-ICP-MS rutile U-Pb dating and mineral micro-area testing are used tosystematically study the rutile deposit in Fujinchuan, Biyang County. The results show that rutile is the maintitanium-bearing mineral in Fujinchuan deposit. Rutile has high purity, with TiO2 content ranging from 95.6% to98.5%. The LA-ICP-MS rutile U-Pb geochronology determined that the mineralization age of the rutile deposit inthe FuJinchuan area is (283±26) Ma, suggesting the possible existence of a Permian rutile mineralization period inthe Biyang area. The Nb content is higher than Zr content (Nb/Zr ranging from 1.76 to 42.88), and Nb>800×10-6, in.dicating that the rutile in the Fujinchuan deposit was formed in metamorphic mudstone rather than metamorphicmafic rock. Rutile in Fujinchuan deposit belongs to metamorphic origin and may belong to mixed source of crustand mantle. |
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