Rock Identifier

Category

Sedimentary (Man Made Composite)

Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.

Milky Quartz with Iron Inclusions (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Sandstone (Red Sandstone / River Stone) (Arenite (composed primarily of Quartz, SiO2, with Iron Oxide cementation)) — sedimentary

Sandstone (Red Sandstone / River Stone)

Arenite (composed primarily of Quartz, SiO2, with Iron Oxide cementation)

Conglomerate (Conglomerate (SiO2 primary clasts with lithic matrix)) — sedimentary

Conglomerate

Conglomerate (SiO2 primary clasts with lithic matrix)

Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

Milky Quartz in Matrix (Silicon Dioxide (SiO2)) — mineral

Milky Quartz in Matrix

Silicon Dioxide (SiO2)

Chert (and Jasper/Flint variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (and Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint in dark varieties) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint in dark varieties)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Banded Sandstone (Arenite with Liesegang banding (primarily SiO2 with FeO(OH) impurities)) — sedimentary

Banded Sandstone

Arenite with Liesegang banding (primarily SiO2 with FeO(OH) impurities)

Chert (Iron-stained) (Chert (Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (Iron-stained)

Chert (Cryptocrystalline Silica, SiO2)

Yellow Quartzite (Onyx Pebble) (Silicon Dioxide (SiO2) - Quartzite) — metamorphic

Yellow Quartzite (Onyx Pebble)

Silicon Dioxide (SiO2) - Quartzite

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Megalodon Shark Tooth Fossil (Otodus megalodon) — sedimentary

Megalodon Shark Tooth Fossil

Otodus megalodon

Pyrite (on host rock) (Iron Sulfide (FeS2)) — mineral

Pyrite (on host rock)

Iron Sulfide (FeS2)

Chalcedony (Common Opal/Chert variety) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Common Opal/Chert variety)

Silicon Dioxide (SiO2)

Celestine (or Celestite) (Strontium sulfate (SrSO4)) — mineral

Celestine (or Celestite)

Strontium sulfate (SrSO4)

Favosites (Honeycomb Coral Fossil) (Favosites (Genus of extinct tabulate coral)) — sedimentary

Favosites (Honeycomb Coral Fossil)

Favosites (Genus of extinct tabulate coral)

Sandstone (Quartzose Sandstone) (Arenite (SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Arenite (SiO2)

Chert (Gravel Bit) (Microcrystalline silica (SiO2)) — sedimentary

Chert (Gravel Bit)

Microcrystalline silica (SiO2)

Chert (Tan/Grey variety) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Tan/Grey variety)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (variant Flint/Jasper) (Microcrystalline Opaline Silica (SiO2)) — sedimentary

Chert (variant Flint/Jasper)

Microcrystalline Opaline Silica (SiO2)

Blue Lace Agate (Cryptocrystalline Quartz (SiO2) with trace minerals) — sedimentary

Blue Lace Agate

Cryptocrystalline Quartz (SiO2) with trace minerals

Oyster Shell (Aragonite/Calcite) (Calcium Carbonate (CaCO3)) — sedimentary

Oyster Shell (Aragonite/Calcite)

Calcium Carbonate (CaCO3)

Red Jasper (Chert) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper (Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

Banded Jasper (Chert) (Silicon Dioxide (SiO2) - variety of Chalcedony) — Sedimentary Rock

Banded Jasper (Chert)

Silicon Dioxide (SiO2) - variety of Chalcedony

Sedimentary Rock

Ferruginous Sandstone (Arenite with Iron-Oxide Cement (SiO2 with Fe2O3/FeO(OH))) — sedimentary

Ferruginous Sandstone

Arenite with Iron-Oxide Cement (SiO2 with Fe2O3/FeO(OH))

Banded Calcite (often marketed as Caribbean Calcite) (Calcium Carbonate (CaCO3) + Aragonite) — sedimentary

Banded Calcite (often marketed as Caribbean Calcite)

Calcium Carbonate (CaCO3) + Aragonite

Mookaite Jasper (Silicified Radiolarite (SiO2 with impurities)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2 with impurities)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Ferruginous Sandstone (Gritstone) (Arenite with Iron-Oxide Cement (SiO2 with Fe2O3 and FeO(OH))) — sedimentary

Ferruginous Sandstone (Gritstone)

Arenite with Iron-Oxide Cement (SiO2 with Fe2O3 and FeO(OH))

Sandstone (Quartzose Sandstone) (Arenite) — sedimentary

Sandstone (Quartzose Sandstone)

Arenite

Red Sandstone (Old Red Sandstone) (Ferruginous Sandstone (SiO2 + Fe2O3)) — sedimentary

Red Sandstone (Old Red Sandstone)

Ferruginous Sandstone (SiO2 + Fe2O3)

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

Quartz Geode

Silicon Dioxide (SiO2) in Geode form

Sandstone Concretion (Clastic Sedimentary Concretion (primarily SiO2 with Fe2O3 cement)) — sedimentary

Sandstone Concretion

Clastic Sedimentary Concretion (primarily SiO2 with Fe2O3 cement)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Chert (Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Botryoidal Chalcedony (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony

Silicon Dioxide (SiO2)

Red Sandstone (Arenite (primarily Quartz with Hematite cement)) — sedimentary

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Red Jasper (Silicon dioxide (SiO2) with iron oxide impurities) — mineral

Red Jasper

Silicon dioxide (SiO2) with iron oxide impurities

Ferruginous Quartz (Quartz (Silicon Dioxide, SiO2) with iron oxide inclusions) — mineral

Ferruginous Quartz

Quartz (Silicon Dioxide, SiO2) with iron oxide inclusions