Data for Manuscript entitled Extremely depleted ultramafic rocks in cold oceanic subduction zone: the Ladong ophiolite in North Qilian Orogenic Belt

The mineral composition data and calculated melt composition presented in the Manuscript entitled Extremely depleted ultramafic rocks in cold oceanic subduction zone: the Ladong ophiolite in North Qilian Orogenic Belt本数据集收录了题为《冷洋俯冲带中的极度亏损超镁铁质岩（ultramafic rocks）：北祁连造山带（North Qilian Orogenic Belt）拉东蛇绿岩（ophiolite）》的学术手稿中所呈现的矿物组成数据与经计算得到的熔体成分。