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

Apatite (Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Apatite

Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))

mineral
Argillite / Mudstone (Argillaceous sedimentary rock) — sedimentary

Argillite / Mudstone

Argillaceous sedimentary rock

sedimentary
Sandstone (with potential mineral staining/concretions) (Arenite (SiO2 based)) — sedimentary

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

mineral
Shale (or Mudstone) (Clay mineral aggregate / Fine-grained siliciclastic sedimentary rock) — sedimentary

Shale (or Mudstone)

Clay mineral aggregate / Fine-grained siliciclastic sedimentary rock

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

mineral
Hematite (likely Botryoidal or Specularite variant) (Iron(III) oxide (Fe2O3)) — mineral

Hematite (likely Botryoidal or Specularite variant)

Iron(III) oxide (Fe2O3)

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

Hematite

Hematite (Iron(III) oxide, Fe2O3)

mineral
Geode (Calcite or Quartz) (Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)) — sedimentary

Geode (Calcite or Quartz)

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

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

Blue Chalcedony

Silicon Dioxide (SiO2)

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

mineral
Banded gneiss pebble (Gneiss, typically quartz–feldspar–mica assemblage) — metamorphic

Banded gneiss pebble

Gneiss, typically quartz–feldspar–mica assemblage

metamorphic
Gneiss (Foliated quartz–feldspar–mica gneiss) — metamorphic

Gneiss

Foliated quartz–feldspar–mica gneiss

metamorphic
Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

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

Rainbow Fluorite

Fluorite (Calcium Fluoride, CaF2)

mineral
Sandstone with Manganese Dendrites (Clastic Sedimentary Rock (SiO2 based with MnO2 inclusions)) — sedimentary

Sandstone with Manganese Dendrites

Clastic Sedimentary Rock (SiO2 based with MnO2 inclusions)

sedimentary
Yellow Chalcedony / Carnelian (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony / Carnelian

Silicon Dioxide (SiO2)

mineral
Pyrite cluster (iron pyrite) (Pyrite, FeS₂) — mineral

Pyrite cluster (iron pyrite)

Pyrite, FeS₂

mineral
Shale (Sedimentary rock composed of clay minerals and quartz) — sedimentary

Shale

Sedimentary rock composed of clay minerals and quartz

sedimentary
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Picture Jasper (Silicon Dioxide (SiO2) with iron oxide and organic impurities) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and organic impurities

sedimentary
Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Rhodochrosite with Quartz (Manganese Carbonate (MnCO3) with Silicon Dioxide (SiO2)) — mineral

Rhodochrosite with Quartz

Manganese Carbonate (MnCO3) with Silicon Dioxide (SiO2)

mineral
Selenite (variety of Gypsum) (Calcium sulfate dihydrate (CaSO4·2H2O)) — mineral

Selenite (variety of Gypsum)

Calcium sulfate dihydrate (CaSO4·2H2O)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

mineral
Limonite Geode / Ironstone Nodule (Hydrated Iron Oxide Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite Geode / Ironstone Nodule

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

mineral
Pyrite (Iron Pyrite (FeS2)) — mineral

Pyrite

Iron Pyrite (FeS2)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Fossilized Fish (Lepidotes) (Lepidotes sp. (Order: Lepisosteiformes)) — sedimentary

Fossilized Fish (Lepidotes)

Lepidotes sp. (Order: Lepisosteiformes)

sedimentary
Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

sedimentary
Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

mineral
River Rock / Stream Pebble (Fluvial Clast / Rounded Sedimentary Particle) — Sedimentary Rock (possibly composed of various minerals)

River Rock / Stream Pebble

Fluvial Clast / Rounded Sedimentary Particle

Sedimentary Rock (possibly composed of various minerals)
Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

mineral
Banded Calcite (CaCO3) — sedimentary

Banded Calcite

CaCO3

sedimentary
Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Hematite (Iron Oxide (Fe2O3)) — mineral

Hematite

Iron Oxide (Fe2O3)

mineral
Limonite (Iron Stone/Ocher) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Stone/Ocher)

Limonite (FeO(OH)·nH2O)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Magnetite (Iron Ore)

Magnetite (Fe3O4)

mineral
Pyrite in Matrix (often with Chalcopyrite) (Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)) — mineral

Pyrite in Matrix (often with Chalcopyrite)

Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)

mineral
Yellow Jasper (Chalcedony (Silicon Dioxide with Iron inclusions), SiO2) — sedimentary

Yellow Jasper

Chalcedony (Silicon Dioxide with Iron inclusions), SiO2

sedimentary