Sandstone (Red Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide)
Category
Browse sedimentary or igneous fragment specimens identified by the Rock Identifier community.
Sandstone (Red Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide)
Red Sandstone
Arenite (with Iron Oxide)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Red Sandstone
Arenite with iron oxide (Hematite) cement
Pink Chert (Brecciated Jasmine/Jasper)
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
River Stone (River Pebble)
Stream-rounded clast (likely Quartzite or Siltstone)
Olivine/Peridot
Magnesium Iron Silicate (Mg,Fe)2SiO4
Fossilized Coral
Anthozoa (Fossilized)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
Meteorite (Chondrite)
Chondritic Meteorite (Undifferentiated extraterrestrial rock)
Quartz Geode
Quartz (Silicon Dioxide, SiO2)
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Jasper
Silicon dioxide (Microcrystalline quartz, SiO2)
Quartz Geode
Crystalline Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Tiger's Eye
Silicon dioxide (SiO2) - Pseudomorph after crocidolite
Sandstone
Clastic sedimentary rock (quartz arenite)
Limestone
Calcite rock (CaCO3)
Sandstone
Quartz Arenite
Conglomerate (or Breccia / Porphyry)
Clastic Sedimentary Rock (Conglomerate / Sandstone)
Red Sandstone
Sandstone (mainly SiO2 with Iron Oxide cement)
Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
Sandstone (Quartzose)
Arenite (Formula: SiO2 primary, with various cements)
Sandstone
Arenite (primary component SiO2)
Sandstone (Picture Sandstone)
Sandstone (primarily Quartz with Iron Oxide impurities)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)
Sandstone (River Rock)
Arenite (composed primarily of SiO2)
Sandstone
Arenite (SiO2 principal component)
Oolite (Ooid Limestone)
Ooidal Limestone (comprised of CaCO3)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)
Sandstone (specifically Picture Sandstone or Wonderstone)
Arenite (composed primarily of SiO2)
Red Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3 iron oxide staining)
Sandstone
Arenite (composed primarily of SiO2)
Milky quartz (likely weathered quartzite or quartz vein fragment)
Quartz, silicon dioxide (SiO₂)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Chert (often called Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often referred to as Flint)
Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)