Geologically speaking, “sandstone” has a very precise meaning. A sandstone is a sedimentary rock that is composed of less than 50% mud-sized particles and less than 30% gravel, with the remaining rock or mineral grains being sand-sized. Sand-sized grains are between 62 microns and 2 millimeters in size. To a non-geologist, this can easily translate…… Continue reading Spec Tech: Sandstone… It’s a Living