Sir: In our paper entitled “Meso- and Neoarchean Banded Iron Formations and Genesis of High-Grade Magnetite Ores in the Anshan-Benxi Area, North China Craton” (Dai et al., 2017), Sm-Nd-Fe-O isotope, mineralogical, and structural data were presented to interpret two-stage banded iron formation (BIF) deposition and a new genetic model for high-grade magnetite ores. The comments of Peng et al. (2018) on our paper chiefly involve the validity of the Dagushan Mesoarchean BIF and the genetic links between metamorphic fluids and regional high-grade magnetite ores. These issues are expanded in the following sections.

Sm-Nd isochron samples should be cogenetic,...

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