中国和其它地区的橄榄岩、科马提岩、榴辉岩和陨石镍同位素

研究的样品为来自中国和其他地区的橄榄岩、科马提岩、榴辉岩和球粒陨石的镍同位素组成，其中陨石样品包括三颗碳质球粒陨石（Allende CV3、Karoonda CK4 和 Kaba CV3）、一颗普通球粒陨石（Chainpur LL3.4）和一颗顽火辉石球粒陨石（Kota-Kota EH3）。采用多接收器电感耦合等离子体质谱仪（MC-ICP-MS）对Ni同位素进行分析，结果显示陆地岩石的Ni同位素组成比球粒陨石更轻，这一特征表明在形成月球的巨大撞击事件中，可能有一个富含硫化物的高度还原天体参与碰撞。

The studied samples consist of nickel isotope compositions of peridotites, komatiites, eclogites, and chondrites from China and other regions. The meteorite samples include three carbonaceous chondrites (Allende CV3, Karoonda CK4, and Kaba CV3), one ordinary chondrite (Chainpur LL3.4), and one enstatite chondrite (Kota-Kota EH3). Nickel isotopes were analyzed using multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). The results show that the Ni isotope compositions of terrestrial rocks are lighter than those of chondrites, which suggests that a highly reduced, sulfide-rich celestial body may have participated in the giant impact event that formed the Moon.