Rock Identifier

Category

Mineral And Sedimentary

Browse mineral and sedimentary specimens identified by the Rock Identifier community.

Learn about Mineral And Sedimentary in the encyclopedia

Coal

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Glauconite

Breccia

Hutcheonite

Halite

Ironstone

Sperrylite

Baddeleyite

Anatase

Brookite

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

Limonite (Iron Stone/Ocher)

Limonite (FeO(OH)·nH2O)

Orange Calcite (likely polished specimen) (Calcite) — Mineral

Orange Calcite (likely polished specimen)

Calcite

Pyrite in Shale (Iron Disulfide (FeS2)) — mineral

Pyrite in Shale

Iron Disulfide (FeS2)

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

Apatite

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

Sandstone Pebble (Sedimentary quartz arenite) — sedimentary

Sandstone Pebble

Sedimentary quartz arenite

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Banded Sedimentary Rock (Siltstone/Mudstone with concretion) (Siltstone with Ferruginous Banding) — sedimentary

Banded Sedimentary Rock (Siltstone/Mudstone with concretion)

Siltstone with Ferruginous Banding

Fine-grained sedimentary rock, likely mudstone (Mudstone (clay- and silt-sized siliciclastic sedimentary rock)) — sedimentary

Fine-grained sedimentary rock, likely mudstone

Mudstone (clay- and silt-sized siliciclastic sedimentary rock)

Tumbled picture jasper (Microcrystalline quartz (SiO₂), commonly with iron-oxide and clay inclusions) — mineral

Tumbled picture jasper

Microcrystalline quartz (SiO₂), commonly with iron-oxide and clay inclusions

Quartz Pebble (Silicon dioxide (SiO2)) — mineral

Quartz Pebble

Silicon dioxide (SiO2)

Breccia Pebble (Sedimentary Breccia) — sedimentary

Breccia Pebble

Sedimentary Breccia

Limonite (Ironstone Concretion) (Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (Ironstone Concretion)

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

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Shale (Lutaceous Rock (Hydrous Aluminum Silicates)) — sedimentary

Shale

Lutaceous Rock (Hydrous Aluminum Silicates)

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

Limonite (Iron Ore)

FeO(OH)·nH2O

Limonite (Ironstone Concretion) (Hydrous ferric oxides (FeO(OH)·nH2O)) — mineral

Limonite (Ironstone Concretion)

Hydrous ferric oxides (FeO(OH)·nH2O)

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Sandstone Anvil / Nutting Stone (Quartzose Sandstone (Sedimentary Rock)) — sedimentary

Sandstone Anvil / Nutting Stone

Quartzose Sandstone (Sedimentary Rock)

Banded Sedimentary Rock (Sedimentary rock with Liesegang banding) — sedimentary

Banded Sedimentary Rock

Sedimentary rock with Liesegang banding

Limonite with Quartz (Hydrated Iron Oxide Hydroxide with Silicon Dioxide (FeO(OH)·nH2O + SiO2)) — mineral

Limonite with Quartz

Hydrated Iron Oxide Hydroxide with Silicon Dioxide (FeO(OH)·nH2O + SiO2)

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Pyrite (or Arsenopyrite / Ore mineral aggregate) (FeS2 (Iron Sulfide)) — mineral

Pyrite (or Arsenopyrite / Ore mineral aggregate)

FeS2 (Iron Sulfide)

Sandstone or possibly a conglomerate (Arenite (if sandstone)) — sedimentary

Sandstone or possibly a conglomerate

Arenite (if sandstone)

Jasper (SiO2 (Cryptocrystalline quartz)) — mineral

Jasper

SiO2 (Cryptocrystalline quartz)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Sandstone (Arenite (clastic sedimentary rock)) — sedimentary

Sandstone

Arenite (clastic sedimentary rock)

Conglomerate (Sedimentary Conglomerate) — sedimentary

Conglomerate

Sedimentary Conglomerate

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Mixed Mineral Assortment (Pyrite, Kyanite, Agate, Jasper) (FeS2 (Pyrite), Al2SiO5 (Kyanite), SiO2 (Agate/Jasper)) — mineral

Mixed Mineral Assortment (Pyrite, Kyanite, Agate, Jasper)

FeS2 (Pyrite), Al2SiO5 (Kyanite), SiO2 (Agate/Jasper)

Jasper (Chert / Chalcedony) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Jasper (Chert / Chalcedony)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Graphite (Graphite (Carbon, C)) — mineral

Graphite

Graphite (Carbon, C)

Feldspar (Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)) — mineral

Feldspar

Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)

Biotite-bearing gneiss (Feldspar–quartz gneiss with dark biotite or amphibole-rich band) — metamorphic

Biotite-bearing gneiss

Feldspar–quartz gneiss with dark biotite or amphibole-rich band

Pitted Sedimentary Rock / Cupstone (Sedimentary rock with weathering pit (arenite / sandstone)) — sedimentary

Pitted Sedimentary Rock / Cupstone

Sedimentary rock with weathering pit (arenite / sandstone)

Shale (Laminated Fissile Pelite) — sedimentary

Shale

Laminated Fissile Pelite

Sandstone (Arenite) — sedimentary

Sandstone

Arenite