Shale
Laminated Mudstone (Shale)
Category
Browse anthropogenic sedimentary (man made) specimens identified by the Rock Identifier community.
Shale
Laminated Mudstone (Shale)
Sandstone
Arenite
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (Ferruginous)
Arenite with Iron Oxide (Fe2O3) cement
Sandstone
Clastic sedimentary rock (Quartz arenite or Arkose)
Petrified Wood
Silicified Wood (SiO2)
Gold (Elemental Metal)
Gold (Au)
Smooth gray river pebble
Likely fine-grained sandstone or siltstone; exact identification requires a fresh surface and tests
Conglomerate Pebble (with Chert / Quartz)
Sedimentary Conglomerate / Breccia Pebble
Sedimentary Pebble
Sedimentary Rock Fragment
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
Shale
Shale (clastic sedimentary rock composed of silt and clay-sized particles)
Shale
Fissile mudstone (Shale)
Shale
Shale (Lutite)
Shale
Lutaceous sedimentary rock
Sandstone
Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)
Sandstone (likely Arkosic)
Clastic Sedimentary Rock
Clear Quartz
Silicon Dioxide (SiO2)
Sandstone Pebble
Arenite (primarily SiO2)
Banded sandstone pebble
Quartz-rich sandstone (predominantly quartz, with feldspar and iron-oxide cement)
Quartz (Rose Quartz or Jasper variety)
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Red Jasper
Microcrystalline Quartz (SiO2 with Iron Oxide impurities)
Limestone
Calcium Carbonate (CaCO3)
Fossil-bearing Sedimentary Rock
Sedimentum cum fossili
Banded Chert / Jasper
Silicon Dioxide (SiO2)
Bivalve Fossil (Clam Shell)
Class Bivalvia
Pitted Sedimentary Rock / Cupstone
Sedimentary rock with weathering pit (arenite / sandstone)
Fossiliferous Shale
Sedimentary Clastic Rock with fossil inclusions (likely Brachiopod or Bivalve impressions)
Shale
Laminated Fissile Pelite
Sandstone
Clastic Sedimentary Rock (composed mostly of SiO2)
Shale
Clastic Sedimentary Rock
Sandstone
Arenite
Shale
Argillite / Shale
Sandstone
Arenite
Silty Shale
Silty Shale (Fissile Sedimentary Rock)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Shale
Mudstone (composed primarily of clay minerals like kaolinite, illite, and smectite, with quartz and calcite)