Rock Identifier

Category

Sedimentary (Fossil)

Browse sedimentary (fossil) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Fossil) in the encyclopedia

Fossil Opal

Fossiliferous Limestone

Fossiliferous Limestone

Bone Opal

Turritella Jasper

Turritella Agate

Turritella Agate

Amber

Petrified Wood

Diatomite

Guano

Conglomerate

Jet

Diatomaceous Earth

Quartz Geode (Silicon Dioxide (SiO2) in Calcareous or Siliceous Matrix) — mineral

Quartz Geode

Silicon Dioxide (SiO2) in Calcareous or Siliceous Matrix

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Red Jasper (Silicon Dioxide with Hematite impurities (SiO2 + Fe2O3)) — mineral

Red Jasper

Silicon Dioxide with Hematite impurities (SiO2 + Fe2O3)

Yellow Jasper (Silicon Dioxide (SiO2) with iron inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Cannonball Concretion (Calcite-cemented Sandstone Concretion) — sedimentary

Cannonball Concretion

Calcite-cemented Sandstone Concretion

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2), Microcrystalline Quartz) — sedimentary

Jasper

Silicon Dioxide (SiO2), Microcrystalline Quartz

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Sandstone (Ferruginous) (Arenite with Iron Oxide cement) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide cement

Iron-stained quartz (likely quartzite or quartz-rich rock) (Quartz, silicon dioxide (SiO₂), with iron-oxide staining) — mineral

Iron-stained quartz (likely quartzite or quartz-rich rock)

Quartz, silicon dioxide (SiO₂), with iron-oxide staining

Granite Pebble (Intrusive Igneous Rock) — igneous

Granite Pebble

Intrusive Igneous Rock

Siltstone Pebble (Siltstone) — sedimentary

Siltstone Pebble

Siltstone

Travertine (or Calcareous Tufa) (Calcium Carbonate (CaCO3)) — sedimentary

Travertine (or Calcareous Tufa)

Calcium Carbonate (CaCO3)

Sandstone (Arenite (SiO2 predominantly)) — sedimentary

Sandstone

Arenite (SiO2 predominantly)

Sandstone (likely Arkosic) (Clastic Sedimentary Rock (primarily SiO2 with Feldspar)) — sedimentary

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (primarily SiO2 with Feldspar)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Chert / Chalcedony Nodule (Silicon Dioxide (SiO2)) — sedimentary

Chert / Chalcedony Nodule

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2) in Geode form) — mineral

Quartz Geode

Silicon Dioxide (SiO2) in Geode form

River Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

River Jasper

Silicon Dioxide (SiO2) with impurities

Pyrite (on Shale/Matrix) (Iron Disulfide (FeS2)) — mineral

Pyrite (on Shale/Matrix)

Iron Disulfide (FeS2)

Sandstone (Sedimentary Clastic Rock (Quartz Arenite)) — sedimentary

Sandstone

Sedimentary Clastic Rock (Quartz Arenite)

Limestone Pebble (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone Pebble

Sedimentary Calcium Carbonate (CaCO3)

Tumbled Agate (Silicon Dioxide (SiO2)) — gemstone

Tumbled Agate

Silicon Dioxide (SiO2)

Sandstone (Pebble) (Sandstone (principally SiO2 with iron oxide impurities)) — sedimentary

Sandstone (Pebble)

Sandstone (principally SiO2 with iron oxide impurities)

Limestone (River Pebble) (Calcite (Calcium Carbonate) - CaCO3) — sedimentary

Limestone (River Pebble)

Calcite (Calcium Carbonate) - CaCO3

Banded Iron Formation (BIF) / Banded Sandstone Nodule (Hematite-rich Sandstone / Ferruginous Chert) — sedimentary

Banded Iron Formation (BIF) / Banded Sandstone Nodule

Hematite-rich Sandstone / Ferruginous Chert

Sandstone (with minor weathering/pitting) (Clastic Sedimentary Rock (composed mostly of SiO2)) — sedimentary

Sandstone (with minor weathering/pitting)

Clastic Sedimentary Rock (composed mostly of SiO2)

Chalcedony (SiO2 (Silicon Dioxide)) — mineral

Chalcedony

SiO2 (Silicon Dioxide)

Blue Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Blue Apatite (Fluorapatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Yellow Apatite (Fluorapatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Yellow Apatite

Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Jasper (or possibly Agate/Chalcedony) beads (SiO2 (Silicon Dioxide)) — mineral

Jasper (or possibly Agate/Chalcedony) beads

SiO2 (Silicon Dioxide)

Sphalerite (Zinc Sulfide (ZnS)) — mineral

Sphalerite

Zinc Sulfide (ZnS)

Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation (SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)) — mineral

Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation

SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)

Jasper or Agate (Silicon dioxide (SiO2)) — Mineral

Jasper or Agate

Silicon dioxide (SiO2)

Pebble (Lithified rock fragment / Sedimentary clast) — sedimentary

Pebble

Lithified rock fragment / Sedimentary clast

Quartz-veined Limestone (Sedimentary limestone with quartz/calcite veinlets) — sedimentary

Quartz-veined Limestone

Sedimentary limestone with quartz/calcite veinlets

Sandstone (Quartz Arenite / Clastic Sedimentary Rock) — sedimentary

Sandstone

Quartz Arenite / Clastic Sedimentary Rock

Sandstone (Clastic sedimentary rock (Quartz arenite)) — sedimentary

Sandstone

Clastic sedimentary rock (Quartz arenite)

Ferruginous Sandstone (River Pebble) (Clastic Sedimentary Rock (Iron-rich)) — sedimentary

Ferruginous Sandstone (River Pebble)

Clastic Sedimentary Rock (Iron-rich)

Sandstone (Banded) (Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)) — sedimentary

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)