Utah Navajo Sandstone from Utah U.S.A.

The Utah Navajo Sandstone is a geological formation in the Glen Canyon Group that is distributed across the U.S. states of Southern Nevada, Northern Arizona, Northwestern Colorado, and Utah as part of the Colorado Plateau province of the United States. The wide range of colors that the Navajo sandstone exhibits reflects a long history of change by groundwater and other subsurface fluids over the past 190 million years. The different colors, other than white, are caused by the presence of varying mixtures and amounts of hematite, goethite, and limonite that fill the pore space in the quartz sand that comprises the Navajo sandstone. The iron in these layers originally came via the erosion of iron-containing silicate minerals.