Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Category
Sedimentary Rock (Specifically A Clastic Sedimentary Rock Formed Into A Cobble)
Browse sedimentary rock (specifically a clastic sedimentary rock formed into a cobble) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Specifically A Clastic Sedimentary Rock Formed Into A Cobble) in the encyclopedia
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Sandstone (Ferruginous / River-worn Cobble)
Sandstone (SiO2 with iron oxide impurities)
sedimentary
Rounded weathered pebble
Likely fine-grained sandstone, siltstone, or weathered volcanic rock; exact identification is uncertain from the image
sedimentary
Quartz Vein in Siltstone
Siltstone with Quartz (SiO2) inclusion
sedimentary
Rounded greenish pebble
Indeterminate; likely weathered quartzite, greenstone, or altered volcanic rock
sedimentary
Chert (Jasper-rich)
Silicon Dioxide (SiO2)
sedimentary
Ocean Jasper
Spherulitic Chalcedony (SiO2)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone with Quartz Vein
Arenite with Crystalline Silica (SiO2)
sedimentary
Quartz Druzy (on Geode Fragments)
Silicon Dioxide (SiO2)
mineral
Fossiliferous Limestone
Carbonate sedimentary rock (CaCO3)
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite or Arkose)
sedimentary
Sandstone (with potential fossil inclusions)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Weathered Sandstone
Quartz Arenite / Clastic Sedimentary Rock
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz with Limonite/Goethite staining)
sedimentary
Sandstone with Quartz Veining
Clastic sedimentary rock (SiO2 dominated)
sedimentary
Sandstone (with minor weathering/pitting)
Clastic Sedimentary Rock (composed mostly of SiO2)
sedimentary
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
sedimentary
Breccia
Breccia (Clastic sedimentary rock)
sedimentary
Sandstone (Pebble/Conglomerate fragment)
Sandstone (clastic sedimentary rock)
Sedimentary Rock
Shale
Shale (clastic sedimentary rock)
Sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Pebble / Gravel Fragment
Clastic Rock Fragment
sedimentary
Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
metamorphic
Sandstone
Arenite
sedimentary
Sandstone (lithic wacke/conglomerate mix)
Clastic Sedimentary Rock (SiO2 with lithic fragments)
sedimentary
Silty Shale
Silty Shale (Fissile Sedimentary Rock)
sedimentary
Sandstone
Clastic sedimentary rock (SiO2 primary)
sedimentary
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Pebble (Likely Basalt or Siltstone)
Clastic sedimentary rock or mafic volcanic rock
Igneous or Sedimentary
Greenstone / Glauconitic Siltstone
Metabasalt or Glauconite-rich Sedimentary Rock
metamorphic or sedimentary
Conglomerate
Clastic Sedimentary Conglomerate
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based typically)
sedimentary
Sandstone (Tumbled / Rounded)
Sedimentary Rock (Quartz arenite)
sedimentary
Red Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Sandstone (with carbonaceous plant fragments)
Arenite (composed primarily of SiO2)
sedimentary
Riverstone (Sandstone or Quartzite)
Sedimentary Rock (likely Arenite)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2)
sedimentary
Sandstone and River Pebbles
Sedimentary Rock (Sandstone / Quartzite / Chert)
sedimentary