Gneiss (River Cobble)
Metamorphic Gneiss
metamorphic
Category
Sedimentary Rock
Browse sedimentary rock specimens identified by the Rock Identifier community.
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Chert (White Chert)
Silicon Dioxide (SiO2)
sedimentary
Sandstone (likely a river or beach pebble)
Sandstone (a clastic sedimentary rock)
Sedimentary Rock
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
sedimentary
Conglomerate
Clastic sedimentary rock (Conglomerate)
sedimentary
Fossiliferous Limestone Pebble
Biogenic Sedimentary Rock (CaCO3)
fossil
Breccia
Breccia (Clastic sedimentary rock)
sedimentary
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
sedimentary
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
sedimentary
Travertine
Terrestrial Sedimentary Rock (CaCO3)
sedimentary
Arkosic Sandstone
Arkose (Clastic Sedimentary Rock)
sedimentary
River Rock
Sedimentary Rock (various compositions)
sedimentary
Limestone
Calcareous Sedimentary Rock (CaCO3)
sedimentary
Sandstone (Pebble/Conglomerate fragment)
Sandstone (clastic sedimentary rock)
Sedimentary Rock
Sandstone
Arenite (clastic sedimentary rock)
sedimentary
Conglomerate
Clastic sedimentary rock (Puddingstone)
sedimentary
Breccia
Breccia - Clastic sedimentary rock
sedimentary
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
sedimentary
Limestone
Calcareous sedimentary rock (CaCO3)
sedimentary
Coarse Sandstone Pebble
Clastic Sedimentary Rock (Sandstone)
sedimentary
Sandstone (Fossiliferous)
Arenite / Clastic Sedimentary Rock
sedimentary
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
sedimentary
Sandstone (likely with Borings or Vesicular Basalt)
Clastic Sedimentary Rock (Sandstone)
sedimentary
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (Sandstone)
sedimentary
Conglomerate
Clastic sedimentary rock (Conglomerate)
sedimentary
Sandstone
Sandstone (clastic sedimentary rock)
sedimentary
Limestone
Calcareous sedimentary rock (CaCO3)
sedimentary
Limestone
Calcareous Sedimentary Rock (CaCO3)
sedimentary
Coal (likely Bituminous or Lignite)
Organic Sedimentary Rock (Carbonaceous)
sedimentary
Conglomerate
Clastic sedimentary rock (Conglomerate)
sedimentary
Sandstone (Ferruginous)
Clastic Sedimentary Rock (Litharenite)
sedimentary
Shale
Shale (clastic sedimentary rock)
Sedimentary
Chert
Silicon dioxide (SiO2)
Sedimentary
Chert (often called Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (potentially Flint or Mudstone)
Microcrystalline Quartz (SiO2)
sedimentary
Bivalve Fossil in Sedimentary Matrix
Fossiliferous Mudstone (Class: Bivalvia)
sedimentary
Belemnoit (Fossil)
Belemnoidea (Order), Rostrum / Guard
sedimentary
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Fossilized Shark Tooth in Matrix
Otodus sp. (likely Otodus obliquus)
sedimentary
Fossil Coral (Rugose Coral Fragment)
Rugosa (extinct order of solitary and colonial corals)
sedimentary
Chert Breccia
Brecciated Chert (Sedimentary Rock)
sedimentary