Rock Identifier

Category

Mineral Composite

Browse mineral composite specimens identified by the Rock Identifier community.

Learn about Mineral Composite in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Sea Sediment Jasper

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

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

Galena with Pyrite

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

Chalcopyrite (CuFeS2) — mineral

Chalcopyrite

CuFeS2

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Muscovite (KAl2(AlSi3O10)(OH)2) — mineral

Muscovite

KAl2(AlSi3O10)(OH)2

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Feldspar

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

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Mica Schist or Muscovite (KAl2(AlSi3O10)(OH)2) — metamorphic

Mica Schist or Muscovite

KAl2(AlSi3O10)(OH)2

Limonite with Gossan / Iron Ore (Hydrated iron oxide-hydroxide, approximately FeO(OH)·nH2O) — mineral

Limonite with Gossan / Iron Ore

Hydrated iron oxide-hydroxide, approximately FeO(OH)·nH2O

Graphite (Graphite (Carbon, C)) — mineral

Graphite

Graphite (Carbon, C)

Muscovite Mica (Muscovite (KAl2(AlSi3O10)(F,OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Sodalite (Na8Al6Si6O24Cl2) — mineral

Sodalite

Na8Al6Si6O24Cl2

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

Banded Sandstone (Water-worn Pebble) (Arenite with mineral banding) — sedimentary

Banded Sandstone (Water-worn Pebble)

Arenite with mineral banding

Limonite/Goethite on Shale (Hydrous ferric oxides (FeO(OH)·nH2O) often associated with argillaceous rock) — sedimentary

Limonite/Goethite on Shale

Hydrous ferric oxides (FeO(OH)·nH2O) often associated with argillaceous rock

Fossil Shark Tooth (Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth) — sedimentary

Fossil Shark Tooth

Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth

Polished copper-bearing mineral specimen, likely malachite-rich copper ore (Malachite, Cu₂CO₃(OH)₂, possibly mixed with chrysocolla or limonite) — mineral

Polished copper-bearing mineral specimen, likely malachite-rich copper ore

Malachite, Cu₂CO₃(OH)₂, possibly mixed with chrysocolla or limonite

Sandstone (Clastic sedimentary rock (Quartz arenite)) — sedimentary

Sandstone

Clastic sedimentary rock (Quartz arenite)

Gneiss (specifically Banded Gneiss) (Gneiss) — metamorphic

Gneiss (specifically Banded Gneiss)

Gneiss

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Limonite pseudo-concretion (Ironstone) (Limonite (FeO(OH)·nH2O) / Goethite) — sedimentary

Limonite pseudo-concretion (Ironstone)

Limonite (FeO(OH)·nH2O) / Goethite

Quartz Pebble (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz Pebble

Quartz (Silicon Dioxide - SiO2)

Limonite Stained Basalt (Hydrated Iron Oxide on Mafic Volcanic Rock (FeO(OH)·nH2O)) — igneous

Limonite Stained Basalt

Hydrated Iron Oxide on Mafic Volcanic Rock (FeO(OH)·nH2O)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Dalmatian Stone (Dalmatian Stone (Felsic Igneous Rock)) — igneous

Dalmatian Stone

Dalmatian Stone (Felsic Igneous Rock)

Quartz-rich pegmatite fragment (Granite-family pegmatite; chiefly quartz (SiO₂), feldspar, and black mica (biotite)) — igneous

Quartz-rich pegmatite fragment

Granite-family pegmatite; chiefly quartz (SiO₂), feldspar, and black mica (biotite)

Granite with Mafic Xenolith (Intrusive Igneous Rock (Felsic to Intermediate)) — igneous

Granite with Mafic Xenolith

Intrusive Igneous Rock (Felsic to Intermediate)

Gneiss (Gneiss (foliated metamorphic rock)) — metamorphic

Gneiss

Gneiss (foliated metamorphic rock)

Amygdaloidal Basalt with Quartz Veining (Basalt (Extrusive Igneous Rock) with Quartz (SiO2) veining) — igneous

Amygdaloidal Basalt with Quartz Veining

Basalt (Extrusive Igneous Rock) with Quartz (SiO2) veining

Granite (Granite (Phaneritic Quartz-Feldspar Plutonic Rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Plutonic Rock)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Banded Sedimentary Rock (Stratified Siliciclastic / Arenite or Siltstone with Mineral Bands) — sedimentary

Banded Sedimentary Rock

Stratified Siliciclastic / Arenite or Siltstone with Mineral Bands

Fossil Sea Urchin (Echinoid) (Echinoidea fossil (often replaced by silica or calcite)) — fossil

Fossil Sea Urchin (Echinoid)

Echinoidea fossil (often replaced by silica or calcite)

Nephrite Jade (Nephrite) — Mineral/Rock

Nephrite Jade

Nephrite

Jasper Beads (Polished) (Silicon Dioxide (SiO2)) — sedimentary

Jasper Beads (Polished)

Silicon Dioxide (SiO2)

Quartz Pebble (Crystalline Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Granite Pebble (Granite) — igneous

Granite Pebble

Granite

Calcite (Calcite (CaCO3)) — Mineral

Calcite

Calcite (CaCO3)