Photomicrographs from the Ironwood Iron-Formation, Gogebic Iron Range, Wisconsin, USA

This dataset comprises photomicrographs from drill core and outcrop samples from the Ironwood Iron-Formation in the Gogebic Iron Range, Wisconsin, USA.本数据集涵盖采自美国威斯康星州戈吉比克铁矿区（Gogebic Iron Range）铁伍德铁矿层（Ironwood Iron-Formation）的钻探岩心与露头样品的显微照片。