Mudstone
Lutylite (group of fine-grained sedimentary rocks)
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Mudstone
Lutylite (group of fine-grained sedimentary rocks)
Sandstone
Arenite
Sandstone
Arenite (primarily SiO2)
Sandstone Pebble
Sandstone (primarily SiO2)
Pyrite
Iron Sulfide (FeS2)
Shale (or Mudstone)
Clay mineral aggregate / Fine-grained siliciclastic sedimentary rock
Red Sandstone Pebble
Sedimentary Quartz Arenite / Arkose
Magnetite or Ironstone Nodule
Magnetite (Fe3O4) or Hematite-rich Sedimentary Nodule
Blue calcite (probable)
Calcite, calcium carbonate (CaCO₃)
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
Siltstone or Mudstone
Siltstone (composed primarily of silt-sized particles)
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
Sandstone Pebble
Sandstone (SiO2 rich clastic rock)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone
Sandstone ( преимущественно SiO2 )
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
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
Shale
Shale (clastic sedimentary rock composed of silt and clay-sized particles)
Shale
Fissile mudstone (Shale)
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily SiO2)
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)