Three-dimensional structural modeling and deformation analysis of Archean magnetite quartzite from the Anshan–Benxi area, northeastern China

摘要: The factors controlling the migration and enrichment of iron in Archean banded formations are important for understanding formation ore resources. Here we present, first time, a micro-three-dimensional modeling method that can be applied to hand specimens ores. This petrographic observations, electron probe microanalysis, structural deformation characteristics magnetite quartzite used assess mechanisms such Anshan–Benxi area is located eastern part North China Craton, one most significant deposits world. Magnetite developed on large scale this area, which has experienced complex deformation, thus these samples ideal our study. As such, undertook micro-scale, three-dimensional representative quartzite. Our methodology involved combined surface internal modeling. rock were sliced at fixed intervals detailed scanned images slices obtained, enabled model constructed each sample. These models allow deformational quantified specimen scale. Petrographic analysis showed brittle microprobe revealed fold axes. Structural as folding ductile shearing, effect enrichment, microscopic provides new approach studying iron-bearing formations.