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.本数据集包含取自美国威斯康星州戈吉比克铁矿带（Gogebic Iron Range）艾伍德铁矿建造（Ironwood Iron-Formation）的钻探岩心与露头样品的显微照片。