Chromite and olivine chemical compositions of dunites and chromitites from the Luobusa and Kızıldağ ophiolites and Gaositai Alaskan-type complex. The previously reported data of Luobusa ophiolite and Stillwater layered intrusion are from Xiao et al. (2016) and Bai et al. (2021). Grey filled diamonds represent chromite data in the mantle peridotites (Young et al., 2009; Liu et al., 2011; Xiao et al., 2013; Stracke et al., 2018). The fields of arc and MORB chromites in Figure 1c are after Kamenetsky et al. (2001). For simplification, both spinel and chromite are used synonymously with chromite in the main text.