Rock Identifier

Category

Mineral (Sedimentary Context)

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

Learn about Mineral (Sedimentary Context) in the encyclopedia

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Coal

Coal

Claystone

Claystone

Shale

Shale

Marl

Black Shale

Black Shale

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

sedimentary
Fossil / Permineralized Bone (Tyrannosaurus rex fossil (Hydroxylapatite replaced by various minerals)) — sedimentary

Fossil / Permineralized Bone

Tyrannosaurus rex fossil (Hydroxylapatite replaced by various minerals)

sedimentary
Chalcedony (Botryoidal) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Botryoidal)

Silicon Dioxide (SiO2)

mineral
Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

sedimentary
Banded gneiss (Gneiss, chiefly quartz–feldspar–mica) — metamorphic

Banded gneiss

Gneiss, chiefly quartz–feldspar–mica

metamorphic
Sandstone (Greywacke) (Arenite / Greywacke Sandstone) — sedimentary

Sandstone (Greywacke)

Arenite / Greywacke Sandstone

sedimentary
Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

sedimentary
Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

sedimentary
Sandstone Concretion (Sedimentary Concretion (Quartz sand bound by mineral cement)) — sedimentary

Sandstone Concretion

Sedimentary Concretion (Quartz sand bound by mineral cement)

sedimentary
Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

mineral
Chert / Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Chert / Quartz Pebble

Silicon Dioxide (SiO2)

sedimentary
Tumbled milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

mineral
Quartz-veined Sandstone (Quartzite-veined Arenite / SiO2 and quartz sand) — sedimentary

Quartz-veined Sandstone

Quartzite-veined Arenite / SiO2 and quartz sand

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

Sandstone

Sedimentary Rock (Quartz Sandstone)

sedimentary
Magnetite (Lodestone) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone)

Magnetite (Fe3O4)

mineral
Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

mineral
Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

mineral
Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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

Blue Apatite

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

mineral
Satin Spar (Selenite variant) (Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)) — mineral

Satin Spar (Selenite variant)

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

mineral
Geode (Unopened) (Silicon Dioxide (SiO2) in sedimentary vugs) — sedimentary

Geode (Unopened)

Silicon Dioxide (SiO2) in sedimentary vugs

sedimentary
Generic Pebble (Lithic Fragment) — sedimentary

Generic Pebble

Lithic Fragment

sedimentary
Sandstone (likely Arkosic or Lithic) (Clastic Sedimentary Rock (SiO2 with accessory minerals)) — sedimentary

Sandstone (likely Arkosic or Lithic)

Clastic Sedimentary Rock (SiO2 with accessory minerals)

sedimentary
Sandstone (Tumbled/River Pebble) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Tumbled/River Pebble)

Arenite (composed primarily of SiO2)

sedimentary
Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

mineral
Turquoise (Turquoise, CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Turquoise, CuAl6(PO4)4(OH)8·4H2O

mineral
Magnetite (Lodestone variety) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

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

Quartz Geode Fragment

Silicon Dioxide (SiO2)

mineral
Conglomerate (Conglomerate (a clastic sedimentary rock)) — Sedimentary Rock

Conglomerate

Conglomerate (a clastic sedimentary rock)

Sedimentary Rock
Sandstone Pebble (Sedimentary Rock (Quartzose Sandstone)) — sedimentary

Sandstone Pebble

Sedimentary Rock (Quartzose Sandstone)

sedimentary
Magnetite Ore (Magnetite (Fe3O4)) — mineral

Magnetite Ore

Magnetite (Fe3O4)

mineral
Sandstone Concretion (Clastic sedimentary rock (primarily Quartz SiO2 with mineral cement)) — sedimentary

Sandstone Concretion

Clastic sedimentary rock (primarily Quartz SiO2 with mineral cement)

sedimentary
Limestone Breccia (Sedimentary Breccia (Calcareous)) — sedimentary

Limestone Breccia

Sedimentary Breccia (Calcareous)

sedimentary
Galena with Pyrite (Lead Sulfide (PbS) associated with Iron Sulfide (FeS2)) — mineral

Galena with Pyrite

Lead Sulfide (PbS) associated with Iron Sulfide (FeS2)

mineral
Mixed sedimentary rock and mineral specimens (Predominantly limestone, chert, sandstone, and iron-oxide-bearing clasts; exact identification requires testing) — sedimentary

Mixed sedimentary rock and mineral specimens

Predominantly limestone, chert, sandstone, and iron-oxide-bearing clasts; exact identification requires testing

sedimentary
Sandstone and Mixed Rock Assemblage (Clastic Sedimentary Rock / Quartz Arenite) — sedimentary

Sandstone and Mixed Rock Assemblage

Clastic Sedimentary Rock / Quartz Arenite

sedimentary
Sandstone (Quartzose Sandstone (Sedimentary Rock)) — sedimentary

Sandstone

Quartzose Sandstone (Sedimentary Rock)

sedimentary
Yellow Ocher (Iron-rich Silt/Clay) (Goethite-rich Limonite (FeO(OH)qnH2O)) — sedimentary

Yellow Ocher (Iron-rich Silt/Clay)

Goethite-rich Limonite (FeO(OH)qnH2O)

sedimentary
River Rock (Sedimentary clast) — sedimentary

River Rock

Sedimentary clast

sedimentary
Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

mineral
Limonite (Iron Ore) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

mineral
Siltstone Pebble with Veining (Siltstone) — sedimentary

Siltstone Pebble with Veining

Siltstone

sedimentary