Sandstone
Arenite (SiO2 based)
Category
Browse sedimentary (fossiliferous) specimens identified by the Rock Identifier community.
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (primarily SiO2)
Sandstone (Pebble/Cobble)
Arenite (primarily SiO2)
Sandstone with Liesegang Rings
Quartzose Sandstone with Iron Oxide Precipitation
Sandstone
Sandstone (composed mainly of SiO2)
Sandstone
Arenite
Sandstone
Arenite (SiO2 based clastic rock)
Sandstone
Arenite
Coal
Bituminous or Anthracite coal (carbon-rich sedimentary rock)
Limestone
Calcium Carbonate (CaCO3)
Fossil Crab
Decapoda (likely Avitelmessus or Raninidae family)
Chert (Jasper / Flint variant)
Microcrystalline Quartz (SiO2)
Milky Quartz in Shale
Silicon Dioxide (SiO2) in sedimentary host rock
Calcite
Calcium Carbonate (CaCO3)
Hematite
Hematite, Iron(III) oxide (Fe2O3)
Bivalve Fossil (Mussel or Clam Shell)
Bivalvia
Cockle Shell Fossil
Cardium (Bivalvia)
Limestone
Calcareous sedimentary rock (CaCO3)
Siltstone
Siltstone (Siliclastic sedimentary rock)
Shale
Shale (Argillaceous sedimentary rock)
Conglomerate
Conglomerate (clastic sedimentary rock)
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Conglomerate
Conglomerate
Weathered sandstone or iron-stained sedimentary pebble
Quartz-rich sandstone; exact identification requires a fresh surface and tests
Weathered sandstone or iron-rich sedimentary cobble
Quartz arenite to ferruginous sandstone; predominantly SiO₂ (quartz) with iron-oxide cement
Weathered sandstone or iron-rich sedimentary fragment
Quartz-rich sandstone, possibly ferruginous sandstone (SiO₂-dominant)
Sandstone
Arenite (SiO2 principal)
Sandstone
Arenite (SiO2 based)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone
Arenite (primarily SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chert (Arrowhead Fragment)
Cryptocrystalline quartz (SiO2)
Chert / Flint Handaxe
Cryptocrystalline Quartz (SiO2)
Fossil Snail Shell (Embedded in Resin)
Gastropoda fossil
Fossil Snail
Gastropoda (fossilized)
Fossil Shark Tooth
Chondrichthyes (Class)
Fossil Shark Tooth
Chondrichthyes dentition (Fossilized Tooth)
Coal
Bituminous Coal / Anthracite
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Fossilized Coral (Rugose or Tabulate) or Stromatolite
Phylum Cnidaria / Stromatolithus