Sandstone
Sedimentary Clastic Rock (Quartz arenite)
sedimentary
Category
Biogenic Material
Browse biogenic material specimens identified by the Rock Identifier community.
Learn about Biogenic Material in the encyclopedia
View all →
Sandstone
Sedimentary Rock (Quartz arenite or arkose)
sedimentary
Iron-Stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide/Limonite coating
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Sandstone (Weathered Pebble)
Sedimentary Rock (Quartz arenite)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Red Sandstone with Reduction Spot
Quartzose Sandstone with a Leach/Reduction Spot
sedimentary
Sandstone
Sandstone (SiO2 dominant, with minor feldspar and clay minerals)
sedimentary
Quartz Pebble with Epidote / Chlorite Inclusions
Silicon Dioxide (SiO2) with Epidote/Chlorite inclusions
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Iron-stained Quartz
Silicon Dioxide with Iron Oxide (SiO2 with Fe2O3)
mineral
Rock Fragment with Calcite/Quartz Vein
Polymictic Rock Fragment (SiO2 / CaCO3)
igneous
Sandstone / Chert Gravel
SiO2 (Silicon Dioxide based clastic sedimentary rock)
sedimentary
Sandstone
SiO2 (predominantly quartz sand)
sedimentary
Sandstone
Sandstone (SiO2-rich detrital sedimentary rock)
sedimentary
Sandstone
Sandstone (composed predominantly of SiO2)
sedimentary
Corundum (Sapphire / Raw Sapphire)
Aluminum Oxide (Al2O3)
gemstone
Porphyritic Granite (Pink Granite)
Granite (plagioclase, alkali feldspar, quartz, biotite)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (with Moss/Lichen Growth)
Sandstone (Quartz Arenite / Lithic Arenite)
sedimentary
Red Siltstone
Siltstone (composed of Quartz and Clay minerals)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Crystalline Silica (SiO2)
mineral
Yellow Jasper Ocher
Limonitic Chert (SiO2 with FeO(OH)·nH2O)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Sandstone
Arenite
sedimentary
Red Sandstone
Sandstone (Quartz Arenite with Iron Oxide)
sedimentary
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone with Dendritic Inclusions
Quartzose Sandstone
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
River Pebble
Siliceous rock fragment
sedimentary
Banded Sedimentary Rock (Wishbone Stone / Banded Quartzite or Limestone)
Silicified limestone or banded sedimentary rock with mineral veins
sedimentary
Thunder Egg (Agate Core)
Cryptocrystalline Quartz (SiO2) in Rhyolite/Perlite Matrix
mineral
Sandstone (River Cobble)
Sandstone (composed predominantly of SiO2 - Quartz)
sedimentary
Blue Goldstone
Synthetic glass with copper or cobalt/manganese inclusions
man-made glass
Sandstone
Sandstone (Siliciclastic Sedimentary Rock)
sedimentary
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Granite Cobble / Gneiss (River Rock)
Granitic Gneiss / Felsic Igneous Rock
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Unakite
Altered Granite (composed of epidote, pink orthoclase feldspar, and quartz)
metamorphic