Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Category
Rock (Likely Sedimentary)
Browse rock (likely sedimentary) specimens identified by the Rock Identifier community.
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Quartz (Druzy on Matrix)
Silicon Dioxide (SiO2)
mineral
Sandstone (Pebble)
Arenite
sedimentary
Weathered Sandstone or Siltstone
Sedimentary Rock
sedimentary
Shale or Slaty Mudstone
Argillaceous sedimentary rock
sedimentary
Shale
Argillite / Shale
sedimentary
Quartz Geode in Sedimentary Host Rock
Silicon Dioxide (SiO2) in Carbonate Matrix
sedimentary
Sandstone Grain
Clastic Sedimentary Rock Grain (SiO2 dominated)
sedimentary
Fossiliferous Limestone
Limestone with fossil bioclasts (Calcium Carbonate, CaCO3)
sedimentary
Unidentified small rocks or gravel
sedimentary
Shale with Quartz Veins
Fissile Sedimentary Rock (SiO2)
sedimentary
Pyrite in Shale
Iron Disulfide (FeS2)
mineral
Sedimentary Rock with Crafts (Pet Rock)
Sedimentary rock decorated with synthetic materials
sedimentary
River Cobble (likely Siltstone or Sandstone)
Clastic Sedimentary Rock
sedimentary
Painted River Rock
Painted Quartzite or Smooth Siltstone
sedimentary
Riverstone (Sandstone or Quartzite)
Sedimentary Rock (likely Arenite)
sedimentary
Fish Fossil in Limestone
Lycoptera (likely) in Micritic Limestone
sedimentary
Sandstone (Quartzite-rich)
Clastic sedimentary rock (SiO2 primary)
sedimentary
Shale
Fissile Siliciclastic Sedimentary Rock
sedimentary
Shale with Iron Staining
Fissile Mudrock (Sedimentary Rock)
sedimentary
Chert (with Epidote/Quartz veining)
Cryptocrystalline silica (SiO2) with Epidote/Quartz inclusions
sedimentary
Sandstone (with Siltstone/Greywacke variations)
Sedimentary Rock (Clastic)
sedimentary
Painted Garden Rock
Coated Siltstone or Mudstone
sedimentary
Shale
Clastic sedimentary rock (primarily clay and silt minerals)
sedimentary
Rounded gray stone, likely slate or fine-grained sandstone
Probable slate (low-grade metamorphosed shale) or lithic sandstone; exact identification requires testing
sedimentary
Pumice
Pumice (Amorphous volcanic glass)
Igneous
Shale (sub-type: Carbonaceous Shale)
Lutaceous Sedimentary Rock
sedimentary
Sandstone (Sedimentary Rock)
Arenite (SiO2 based)
sedimentary
Sandstone (with carbonaceous plant fragments)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Chert (Yellow/Tan Variety)
Chert (SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Conglomeratic Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone Pebble
Arenite (Sandstone)
sedimentary
Gray Limestone
Carbonate rock (CaCO3)
sedimentary
Sandstone (River Cobble / Pebble)
Sedimentary Rock (Quartz Sandstone / Arenite)
sedimentary
Stream-Rounded Shale or Mudstone
Argillaceous sedimentary rock
sedimentary
Brecciated stone pebble
Breccia
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Quartz-encrusted Matrix
Silicon Dioxide (SiO2) with Ferruginous Sandstone
sedimentary
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary