Rock Identifier

Category

Organic Materia (Not A Rock Or Mineral)

Browse organic materia (not a rock or mineral) specimens identified by the Rock Identifier community.

Learn about Organic Materia (Not A Rock Or Mineral) in the encyclopedia

Rock Salt

Rock Gypsum

Coral Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Emerald in Matrix

Emerald in Matrix

Aquamarine Matrix

Aquamarine Matrix

Sapropel

Halite

Black Shale

Bituminous Shale

Bituminous Shale

Quartz (Rock Crystal) with minor impurities (Quartz (SiO2)) — Mineral

Quartz (Rock Crystal) with minor impurities

Quartz (SiO2)

Flagstone (Sedimentary Sandstone / Flagstone) — sedimentary

Flagstone

Sedimentary Sandstone / Flagstone

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Chert (Jasper/Flint variety) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline quartz (SiO2)

River Pebble (Sandstone) (Quartz-rich Sandstone Pebble) — sedimentary

River Pebble (Sandstone)

Quartz-rich Sandstone Pebble

Quartz (Milky or Cloudy) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Cloudy)

Silicon Dioxide (SiO2)

Herkimer Diamond (Quartz (Silicon Dioxide, SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Kimberlite (Ultramafic igneous rock) — igneous

Kimberlite

Ultramafic igneous rock

Sandstone Pebble (Arenite (SiO2 principal)) — sedimentary

Sandstone Pebble

Arenite (SiO2 principal)

Gossanous Sandstone (likely Terrestrial) (Arenite with Iron-Oxide inclusions) — sedimentary

Gossanous Sandstone (likely Terrestrial)

Arenite with Iron-Oxide inclusions

Limonite with Hematite (Hydrated iron(III) oxide-hydroxide with variable composition (FeO(OH)·nH2O)) — mineral

Limonite with Hematite

Hydrated iron(III) oxide-hydroxide with variable composition (FeO(OH)·nH2O)

Limonite Concretion (Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O) — sedimentary

Limonite Concretion

Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O

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

Ferruginous Sandstone (River Pebble)

Clastic Sedimentary Rock (Iron-rich)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Ferruginous Sandstone (Ironstone) (Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)) — sedimentary

Ferruginous Sandstone (Ironstone)

Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)

Turquoise (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Greenschist (Greenschist (chlorite-epidote schist)) — metamorphic

Greenschist

Greenschist (chlorite-epidote schist)

Herkimer Diamond (Quartz (Silicon Dioxide, SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Quartz Sandstone (Quartz Arenite) — sedimentary

Quartz Sandstone

Quartz Arenite

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

Sandstone

Clastic Sedimentary Rock (Quartz arenite)

Banded Sandstone (Quartz-rich Arenite Sandstone) — sedimentary

Banded Sandstone

Quartz-rich Arenite Sandstone

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

Sandstone

Clastic sedimentary rock (Quartz arenite)

Sandstone (Sandstone (SiO2 with iron oxides and clay)) — sedimentary

Sandstone

Sandstone (SiO2 with iron oxides and clay)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Calcareous/Lithic) (Sedimentary Rock (Clastic Sandstone with Calcium Carbonate cement)) — sedimentary

Sandstone (Calcareous/Lithic)

Sedimentary Rock (Clastic Sandstone with Calcium Carbonate cement)

Sandstone (Arenite (SiO2 composition primarily)) — sedimentary

Sandstone

Arenite (SiO2 composition primarily)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Sandstone (Arenite (SiO2 principal component)) — sedimentary

Sandstone

Arenite (SiO2 principal component)

Conglomerate Pebble (with Chert / Quartz) (Sedimentary Conglomerate / Breccia Pebble) — sedimentary

Conglomerate Pebble (with Chert / Quartz)

Sedimentary Conglomerate / Breccia Pebble

Sandstone (lithic/quartz variant) (Clastic sedimentary rock (SiO2 predominant)) — sedimentary

Sandstone (lithic/quartz variant)

Clastic sedimentary rock (SiO2 predominant)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Sandstone (Arenite (SiO2 predominantly)) — sedimentary

Sandstone

Arenite (SiO2 predominantly)

Sandstone (lithic wacke/conglomerate mix) (Clastic Sedimentary Rock (SiO2 with lithic fragments)) — sedimentary

Sandstone (lithic wacke/conglomerate mix)

Clastic Sedimentary Rock (SiO2 with lithic fragments)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Botryoidal Quartz / Calcite Geode crust (Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)) — mineral

Botryoidal Quartz / Calcite Geode crust

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

Sandstone (Arenite (Siliclastic Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Siliclastic Sedimentary Rock)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Basalt with Weathering Rind (Basalt (Mafic volcanic rock)) — igneous

Basalt with Weathering Rind

Basalt (Mafic volcanic rock)