Rock Identifier

Category

Sedimentary Mineral

Browse sedimentary mineral specimens identified by the Rock Identifier community.

Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone (likely Quartzite-grade) (Arenite (primarily SiO2)) — sedimentary

Sandstone (likely Quartzite-grade)

Arenite (primarily SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

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

Magnetite (Lodestone)

Magnetite (Fe3O4)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Bauxite (Bauxite (Principal ore of aluminum; mixture of minerals including Gibbsite Al(OH)3, Boehmite and Diaspore AlO(OH))) — sedimentary

Bauxite

Bauxite (Principal ore of aluminum; mixture of minerals including Gibbsite Al(OH)3, Boehmite and Diaspore AlO(OH))

Sandstone (Greywacke/Siltstone variant) (Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)) — sedimentary

Sandstone (Greywacke/Siltstone variant)

Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (River Pebble) (Arenite) — sedimentary

Sandstone (River Pebble)

Arenite

Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Pyrite (Pyrite (Iron Disulfide), FeS2) — Mineral

Pyrite

Pyrite (Iron Disulfide), FeS2

Bumblebee Jasper (technically a type of Agate/Anhydrite) (Calcite and Anhydrite with inclusions of Realgar and Orpiment (As2S3)) — sedimentary

Bumblebee Jasper (technically a type of Agate/Anhydrite)

Calcite and Anhydrite with inclusions of Realgar and Orpiment (As2S3)

Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Chalcedony (Yellow/Honey variety) (Microcrystalline Quartz (SiO2)) — mineral

Chalcedony (Yellow/Honey variety)

Microcrystalline Quartz (SiO2)

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

Red Hematite

Iron(III) oxide (Fe2O3)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Ferruginous Quartz (Silicon Dioxide with Hematite/Limonite inclusions (SiO2 + Fe2O3)) — mineral

Ferruginous Quartz

Silicon Dioxide with Hematite/Limonite inclusions (SiO2 + Fe2O3)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Aragonite Star Cluster (Aragonite (Calcium Carbonate - CaCO3)) — mineral

Aragonite Star Cluster

Aragonite (Calcium Carbonate - CaCO3)

Pyrite (Cube variety) (Iron Sulfide (FeS2)) — mineral

Pyrite (Cube variety)

Iron Sulfide (FeS2)

Dendritic Agate (Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide) — mineral

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — Mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Hematite (Iron Ore) (Hematite (Fe2O3)) — mineral

Hematite (Iron Ore)

Hematite (Fe2O3)

Yellow Jasper (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

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

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Shale or Mudstone (Based on appearance) (Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)) — Sedimentary

Shale or Mudstone (Based on appearance)

Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Chert (Jasper variation) (Silicon dioxide (SiO2)) — sedimentary

Chert (Jasper variation)

Silicon dioxide (SiO2)

Sand (Construction Grade) (Unconsolidated siliciclastic sediment (primarily SiO2)) — sedimentary

Sand (Construction Grade)

Unconsolidated siliciclastic sediment (primarily SiO2)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Sandstone Concretion (Clastic sedimentary rock (primarily Quartz SiO2)) — sedimentary

Sandstone Concretion

Clastic sedimentary rock (primarily Quartz SiO2)

Kyanite (within Quartz) (Kyanite (Al2SiO5) in crystalline Quartz base (SiO2)) — metamorphic

Kyanite (within Quartz)

Kyanite (Al2SiO5) in crystalline Quartz base (SiO2)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Red Sandstone (Arenite (primarily SiO2 with hematite/iron oxide coating)) — sedimentary

Red Sandstone

Arenite (primarily SiO2 with hematite/iron oxide coating)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)