Rock Identifier

Category

Mineral Health

Browse mineral health specimens identified by the Rock Identifier community.

Learn about Mineral Health in the encyclopedia

Glauconite

Glauconite

Hutcheonite

Hutcheonite

Halite

Halite

Sperrylite

Sperrylite

Baddeleyite

Baddeleyite

Anatase

Anatase

Brookite

Brookite

Talc

Talc

Euxenite

Euxenite

Dolomite

Dolomite

Buergerite

Buergerite

Eltyubyuite

Eltyubyuite

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Quartz Geode (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (Arenite (mainly SiO2 with varying cements)) — sedimentary

Sandstone

Arenite (mainly SiO2 with varying cements)

Turquoise (possible Howlite imitation) (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise (possible Howlite imitation)

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Variscite (or potentially a turquoise/variscite matrix cabochon, or an impression jasper) (AlPO4·2H2O (Variscite) or related phosphate/silicate material depending on exact composition) — Mineral

Variscite (or potentially a turquoise/variscite matrix cabochon, or an impression jasper)

AlPO4·2H2O (Variscite) or related phosphate/silicate material depending on exact composition

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Howlite and Purpurite druzy (Calcium Borosilicate Hydroxide (Howlite) and Manganese Phosphate (Purpurite)) — mineral

Howlite and Purpurite druzy

Calcium Borosilicate Hydroxide (Howlite) and Manganese Phosphate (Purpurite)

Tumbled Moonstone (Feldspar (Orthoclase/Albite), KAlSi3O8) — mineral

Tumbled Moonstone

Feldspar (Orthoclase/Albite), KAlSi3O8

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Turquoise (CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode (Quartz (Silicon Dioxide, SiO2) in a Geode) — sedimentary

Quartz Geode

Quartz (Silicon Dioxide, SiO2) in a Geode

Satin Spar (Satin Spar Selenite) (Gypsum (CaSO4·2H2O)) — mineral

Satin Spar (Satin Spar Selenite)

Gypsum (CaSO4·2H2O)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Libyan Desert Glass (Tektite (high-silica impact glass), SiO2) — mineral

Libyan Desert Glass

Tektite (high-silica impact glass), SiO2

Schist (Mica Schist (primarily Muscovite or Biotite sheet silicates)) — metamorphic

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Vuggy Quartz on Matrix (Crystalline Silicon Dioxide (SiO2)) — mineral

Vuggy Quartz on Matrix

Crystalline Silicon Dioxide (SiO2)

Rutilated Quartz (Silicon Dioxide with Titanium Dioxide (SiO2 with TiO2 inclusions)) — mineral

Rutilated Quartz

Silicon Dioxide with Titanium Dioxide (SiO2 with TiO2 inclusions)

Schist (Mica Schist (primarily consisting of muscovite, biotite, and quartz)) — metamorphic

Schist

Mica Schist (primarily consisting of muscovite, biotite, and quartz)

Botryoidal Hemimorphite (Hemimorphite (Zn4Si2O7(OH)2·H2O)) — mineral

Botryoidal Hemimorphite

Hemimorphite (Zn4Si2O7(OH)2·H2O)

Green Druzy Quartz (Prasiolite) (Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)) — mineral

Green Druzy Quartz (Prasiolite)

Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)

Breccia (Breccia (Clastic Sedimentary Rock)) — sedimentary

Breccia

Breccia (Clastic Sedimentary Rock)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Extrusive mafic volcanic rock) — igneous

Basalt

Extrusive mafic volcanic rock

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Granite (Weathered) (Phaneritic Felsic Igneous Rock) — Igneous

Granite (Weathered)

Phaneritic Felsic Igneous Rock

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

Granite (Granite (Phaneritic igneous rock consisting of Quartz, Feldspar, and Mica)) — igneous

Granite

Granite (Phaneritic igneous rock consisting of Quartz, Feldspar, and Mica)

Granite Pebble (Granite (Phaneritic intrusive igneous rock)) — igneous

Granite Pebble

Granite (Phaneritic intrusive igneous rock)

Basalt (with possible Olivine inclusions) (Mafic Igneous Rock (primarily Plagioclase and Pyroxene)) — igneous

Basalt (with possible Olivine inclusions)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt (Basalt (composition predominately plagioclase feldspar and pyroxene)) — igneous

Basalt

Basalt (composition predominately plagioclase feldspar and pyroxene)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Ironstone with Pyrite (Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)) — sedimentary

Ironstone with Pyrite

Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)

Gneiss (Gneiss (a type of metamorphic rock)) — Metamorphic Rock

Gneiss

Gneiss (a type of metamorphic rock)

Metamorphic Rock

Heat-Treated Amethyst (Commercial Citrine) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Heat-Treated Amethyst (Commercial Citrine)

Silicon Dioxide (SiO2) with iron impurities

Eudialyte (Na15Ca6Fe3Zr3Si26O72(OH,Cl)2 (Eudialyte Group)) — mineral

Eudialyte

Na15Ca6Fe3Zr3Si26O72(OH,Cl)2 (Eudialyte Group)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Quartz (Rose/Pink variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rose/Pink variety)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)