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GRV 90027 is a Martian lherzolitic shergottites(L-S)containing poikilitic,non-poikilitic,and melted pocket components.GRV 99027 is mainly composed of olive(55 vol%)and pyroxene(37.5 vol%),with minor maskelynite(6 vol%)and chromite(1.5 vol%),and trace w