Sulfide-melt inclusions in mantle xenoliths of Hannuoba,China

来源 :Chinese Science Bulletin | 被引量 : 0次 | 上传用户:breeze_86
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Sulfide fluid incluision study on mantle xenoliths of Hannouba has been carried out by EPMA analysis. It is indicated that the Ni/Fe ratios of metal sulfides in sulfide-melt inclusions from Hannuoba seem to be related to host rocks. These data of lherzolite (pentlandite) are obviously higher than those of olivine pyroxenite (mainly pentlandite, partly pyrrhotine). The LRM analysis shows that sulfur (H_2S+SO_2) occupies larger proportion in gas composition of CO_2 fluid inclusions, generally more than mol 20 %. This may be related to sulfide inclusions which are frequently found. Sulfide fluid incluision study on mantle xenoliths of Hannuba has been carried out by EPMA analysis. It is indicated that the Ni / Fe ratios of metal sulfides in sulfide-melt inclusions from Hannuoba seem to be related to host rocks. These data of lherzolite (pentlandite ) LRM analysis shows that sulfur (H_2S + SO_2) occupies larger proportion in gas composition of CO_2 fluid inclusions, generally more than mol 20%. This may be related to sulfide inclusions which are frequently found.
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