banded iron formation-sericite schist contact sample (soudan iron-formation, neoarchean, ~2.722 ga; soudan mine, soudan, minnesota, usa) 1 color palette

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#762614 #51352B #BC4922 #BAB19F #9D8E6C

related tags: 473A35 51352B 5E362D 965C49 9D8E6C B3AFA6 BAB19F BC4922 banded bif chert ely formation grade greenstone hematite high iron ironformation jasper jaspilite mine minnesota neoarchean ore park schist sericite soudan specular state underground 762614 918979