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

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Pyrite in Matrix (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix

Iron Sulfide (FeS2)

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

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)

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

Sandstone

Sedimentary Rock (Quartz Sandstone)

sedimentary
Conglomerate (Conglomerate) — sedimentary

Conglomerate

Conglomerate

sedimentary
Sandstone (Ferruginous) (Ferruginous Sandstone (SiO2 with Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Ferruginous Sandstone (SiO2 with Fe2O3)

sedimentary
Mica Schist (Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)) — metamorphic

Mica Schist

Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)

metamorphic
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

mineral
Sandstone (Sandstone (Quartzose/Feldspathic Sandstone)) — sedimentary

Sandstone

Sandstone (Quartzose/Feldspathic Sandstone)

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

Petrified Wood

Silicified Wood (SiO2)

fossil
Cowrie Shell Fossil (Cypraea sp.) — fossil

Cowrie Shell Fossil

Cypraea sp.

fossil
Pyrite and Calcite (or Barite) Specimen (Iron Sulfide (FeS2) with Calcium Carbonate (CaCO3)) — mineral

Pyrite and Calcite (or Barite) Specimen

Iron Sulfide (FeS2) with Calcium Carbonate (CaCO3)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Pyrite (Tumbled) (Iron Disulfide (FeS2)) — mineral

Pyrite (Tumbled)

Iron Disulfide (FeS2)

mineral
Quartz Druzy (on Matrix) (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy (on Matrix)

Silicon Dioxide (SiO2)

mineral
Bivalve Fossil (Clam) (Class Bivalvia (e.g., Exogyra or Gryphaea species)) — fossil

Bivalve Fossil (Clam)

Class Bivalvia (e.g., Exogyra or Gryphaea species)

fossil
Pyrite in Matrix (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix

Iron Sulfide (FeS2)

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

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite

mineral
Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

mineral
Celestite (Celestine (SrSO4)) — mineral

Celestite

Celestine (SrSO4)

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

Selenite (Satin Spar)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

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

Druzy Quartz Geode

Silicon Dioxide (SiO2)

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

Quartz Geode

Silicon Dioxide (SiO2)

mineral
Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

mineral
Leopard Skin Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Leopard Skin Jasper

Silicon Dioxide (SiO2) with impurities

sedimentary
Banded Agate (Silk Agate or Maligano Jasper variant) (Silicon Dioxide (SiO2)) — sedimentary

Banded Agate (Silk Agate or Maligano Jasper variant)

Silicon Dioxide (SiO2)

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

Gneiss

Gneiss (High-grade metamorphic rock)

metamorphic
Pyrite (Fool's Gold) Cube (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold) Cube

Iron Sulfide (FeS2)

mineral
Blue Aragonite (Aragonite (Calcium Carbonate, CaCO3)) — mineral

Blue Aragonite

Aragonite (Calcium Carbonate, CaCO3)

mineral
Yellow Ochre / Limonite (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Yellow Ochre / Limonite

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

mineral
Apatite (Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)) — mineral

Apatite

Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)

mineral
Limonite (Ironstone) (Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))) — mineral

Limonite (Ironstone)

Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))

mineral
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Celestine (Celestite)

Strontium sulfate (SrSO4)

mineral
Halite (Rock Salt) (Halite (Sodium Chloride, NaCl)) — mineral

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

mineral
Limonite / Iron Oxide Concretion (FeO(OH)·nH2O (Hydrated iron oxide)) — mineral

Limonite / Iron Oxide Concretion

FeO(OH)·nH2O (Hydrated iron oxide)

mineral
Ironstone Concretion / Goethite-Hematite Nodule (Goethite/Hematite (α-FeO(OH) / Fe2O3)) — sedimentary

Ironstone Concretion / Goethite-Hematite Nodule

Goethite/Hematite (α-FeO(OH) / Fe2O3)

sedimentary
Limonite and Goethite Iron Ore (Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite and Goethite Iron Ore

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

mineral
River Rock (Polished Siliceous Rock / Quartzite Pebble) — sedimentary

River Rock

Polished Siliceous Rock / Quartzite Pebble

sedimentary
Quartz (Chert / Agate / Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert / Agate / Chalcedony)

Silicon Dioxide (SiO2)

mineral