Sandstone
Arenite
sedimentary
Category
Sedimentary (Fossil)
Browse sedimentary (fossil) specimens identified by the Rock Identifier community.
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Grey Limestone Pebble
Limestone (Calcium Carbonate - CaCO3)
sedimentary
Chert Pebble
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based clastic rock)
sedimentary
Limestone (Brecciated/Recrystallized)
Calcium Carbonate (CaCO3)
sedimentary
Limestone with Lichen/Algae
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Clastic sedimentary rock (Arenite)
sedimentary
Weathered limestone
Limestone, predominantly calcite (CaCO₃)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Aggregate Concrete
Anthropogenic Conglomerate (Technosol)
sedimentary
Fossil Coral
Phylum Cnidaria / Scleractinia
fossil
Hag Stone
Perforated Quartz Pebble / Sedimentary Rock
sedimentary
Fossiliferous Sandstone with Plant Remains
Arenite with Carbonaceous impressions (likely Paleozoic/Mesozoic Flora)
sedimentary
Kambaba Jasper
Stromatolite (Fossilized Algae)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Siltstone
Siltstone (primarily SiO2 with Al2O3 and Fe2O3)
sedimentary
Chert Pebble / Brachiopod Fossil Internal Mold
Silicon Dioxide (SiO2) / Fossil: Brachiopoda (generic internal mold)
sedimentary
Sandstone Concretion
Septarian or Carbonate-cemented Sandstone Concretion
sedimentary
Sandstone (Greywacke)
Arenite / Greywacke Sandstone
sedimentary
Limestone Concretion (Botryoidal/Calcareous Nodules)
Calcium Carbonate Concretion (CaCO3)
sedimentary
Slate with Fossiliferous Impressions
Metamorphosed Argillaceous Rock (Fossiliferous Slate)
metamorphic
Crinoidal Limestone
Fossiliferous Limestone containing Crinoid stem fragments (Echinodermata)
fossil
Siltstone
Siltstone (Siliclastic sedimentary rock)
sedimentary
Sandstone (Graywacke)
Arenite / Graywacke (SiO2 with lithic fragments)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Limestone (Weathered / Limonite-stained)
Sedimentary carbonate rock (CaCO3)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Ferruginous Sandstone (Ironstone)
Ferruginous arenite
sedimentary
Sandstone with Iron Staining
Arenite with Limonite/Hematite inclusions (SiO2 + Fe2O3/FeO(OH))
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 principal)
sedimentary
Ferruginous Sandstone
Sandstone with Iron Oxide (Limonite/Goethite)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (specifically Red Sandstone)
Arenite (primarily Quartz, SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Ferruginous Sandstone (Ironstone)
Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)
sedimentary
Ferruginous Sandstone
Sandstone (arenite) with Limonite/Goethite cement
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
sedimentary
Coal (most likely Bituminous or Anthracite)
Coal (organic sedimentary rock)
Sedimentary
Fossil coral fragment
Likely calcitic colonial coral, possibly fossilized scleractinian coral
fossil
Red Shale
Fissile Siliciclastic Sedimentary Rock
sedimentary