Sand Grains from Around the World! Geology
Gobi Desert sand: Highly rounded sand grains from the Gobi Desert of Mongolia.of Fire Island sands,abundant garnet,magnetite,and feldspar are often found,nearby Navajo Sandstone with a color that has been caused by iron staining.
Mineral Commodity Summaries 2017 USGS Mineral Resources.
Jan 19,2017Iron Ore.Quartz Crystal.Tungsten.Chromium.Iron Oxide Pigments.Rare EarthsDiatomite.Magnesium.Scandium.Zinc.Feldspar.Manganese.SeleniumMexico,China,South Africa,Mongolia.GALLIUM.100 1Data are rounded to no more than three significant digits; may not add to totals shown.Contact Us