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对东欧地台别尔哥罗德-米哈伊洛夫斯克构造,苏尔斯克构造和苏伊萨尔构造的科马提岩中铬尖晶石副矿物的化学成分进行了研究。研究查明:科马提岩中的高镁铬尖晶石(第一世代)与地台捕虏体中的相似;科马提岩中铬尖晶石(第二世代)所具的独一无二的化学成分(低镁、高铬及锌、锰异常富集)与减压-耗散熔融作用和混染作用有关;铬尖晶石类的造矿物组分的含量有明显区别。 研究结果证实,科马提岩岩系是长期、多次作用形成的。
The chemical composition of chromite spinel secondary minerals in the komatiite of the eastern European platform Belgorod-Mikhailovsk tectonics, the Sorsk tectonics and the Su et al. Structure are studied. The study identified that the high-Mg-Cr spinel in the kamamatite (first generation) is similar to that in the platform xenoliths; the unique chromium-spinel (second-generation) The chemical composition (low magnesium, high chromium and zinc, manganese anomaly enrichment) is related to the decompression-dissipation melting effect and the mixing effect; the contents of the chromite spinel-made ore-forming components are obviously different. The results of the study confirm that the komatiite rock series is formed by long-term and multiple-action.