Bituminous Coal
Coal (Sedimentary Rock)
Category
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
Bituminous Coal
Coal (Sedimentary Rock)
Coal
Carbonaceous sedimentary rock
Conglomerate
Conglomerate (Sedimentary rock)
Conglomerate
Conglomerate (Sedimentary Rock)
Conglomerate
Conglomerate (Sedimentary Rock)
Stream-Rounded Shale or Mudstone
Argillaceous sedimentary rock
Conglomerate
Clastic Sedimentary Rock
River Cobble (likely Siltstone or Sandstone)
Clastic Sedimentary Rock
Conglomerate
Conglomerative Sedimentary Rock
Conglomerate
Conglomerate (Sedimentary rock)
River Pebble (Siltstone/Mudstone)
Clastic sedimentary rock
Conglomerate (or Breccia)
Clastic Sedimentary Rock
Conglomeratic Sandstone
Clastic Sedimentary Rock
Sandstone
Arenite (Sedimentary Rock)
Polygenetic Conglomerate (or Breccia)
Clastic Sedimentary Rock
Sandstone
Arenite (Sedimentary Rock)
Pebble (likely Siltstone or fine-grained Sandstone)
Sedimentary Clastic Rock
River Rock (likely Siltstone or fine-grained Sandstone)
Clastic Sedimentary Rock
Shale (possibly Carbonaceous or Oil Shale)
Argillaceous Sedimentary Rock
Shale
Argillaceous sedimentary rock
Shale
Lutaceous Sedimentary Rock
Fossil Coral
Tabulate Coral (potentially Favosites or Calapoecia)
Gastropod Steinkern (Internal Mold Fossil)
Gastropoda (Class); Internal mold or 'Steinkern' composed of Calcium Carbonate (CaCO3) or Sedimentary matrix
Rounded beach pebble
Lithology indeterminate; likely fine-grained sandstone, mudstone, or weathered volcanic rock
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz with Limonite/Goethite staining)
Pink Granite
Phaneritic Quartz-Feldspar Plutonic Rock
Quartz (Druzy)
Silicon Dioxide (SiO2)
Granular Sandstone
Arenite (variable composition, primarily SiO2)
Limestone (Micritic)
Sedimentary rock mainly composed of Calcium Carbonate (CaCO3)
Coal
Bituminous or sub-bituminous coal (carbonaceous rock)
Sandstone
Arenite (primarily SiO2)
Sandstone Pebble
Sandstone (Silicon dioxide-rich clastic sedimentary rock)
Sandstone (likely Graywacke or Arkosic varieties)
Arenite (composed primarily of SiO2)
Sandstone (with potential fossil fragments)
Sandstone (SiO2 dominated with iron oxides)
Sandstone (Sedimentary Rock)
Arenite (SiO2 based)
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
Fossilized Bivalve Shell
Class Bivalvia (fossilized)
Fossil Shark Tooth
Selachii (fossilized dentition)
Chert Pebble
Chert (Microcrystalline Quartz, SiO2)
Sandstone with Quartz Vein
Arenite with SiO2 intrusion
Shale
Lutaceous Rock (Hydrous Aluminum Silicates)
Travertine (or Calcareous Tufa)
Calcium Carbonate (CaCO3)