Rock Identifier

Category

This Is Not A Rock Or Mineral

Browse this is not a rock or mineral specimens identified by the Rock Identifier community.

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Claystone

Claystone

Shale

Shale

Rock Salt

Rock Salt

Rock Gypsum

Rock Gypsum

Coral Rock

Coral Rock

Asphalt Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Albite

Albite

Talc-carbonate Rock

Talc-carbonate Rock

Potassium Feldspar

Potassium Feldspar

Halite

Halite

Dolomite

Dolomite

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Iron Oxide staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Iron Oxide staining)

Marble (Metamorphic Limestone (CaCO3)) — metamorphic

Marble

Metamorphic Limestone (CaCO3)

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

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (Arenite (primarily composed of SiO2 - Silicon Dioxide)) — sedimentary

Sandstone

Arenite (primarily composed of SiO2 - Silicon Dioxide)

Conglomerate (Clastic sedimentary rock (Puddingstone)) — sedimentary

Conglomerate

Clastic sedimentary rock (Puddingstone)

Boulder Opal (Precious Opal in Ironstone (Amorphous Hydrated Silica, SiO2·nH2O)) — Mineral

Boulder Opal

Precious Opal in Ironstone (Amorphous Hydrated Silica, SiO2·nH2O)

Greenstone (Epidote/Chlorite-rich Metabasalt) (Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Greenstone (Epidote/Chlorite-rich Metabasalt)

Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Vein with Iron Staining (Silicon Dioxide (SiO2) with limonite/hematite staining) — mineral

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2) with limonite/hematite staining

Blue Quartzite (Dyed) (Metamorphosed Quartz-rich Sandstone (SiO2 with organic dye)) — metamorphic

Blue Quartzite (Dyed)

Metamorphosed Quartz-rich Sandstone (SiO2 with organic dye)

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

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Sandstone (likely Calcareous or Quartz-rich) (Arenite (SiO2 based typically)) — sedimentary

Sandstone (likely Calcareous or Quartz-rich)

Arenite (SiO2 based typically)

Jasper (Jasper (Silicate - SiO2)) — sedimentary

Jasper

Jasper (Silicate - SiO2)

Gneiss (specifically a Granitic Gneiss) (Gneiss (Composition: Quartz, Feldspar, Mica)) — metamorphic

Gneiss (specifically a Granitic Gneiss)

Gneiss (Composition: Quartz, Feldspar, Mica)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Basalt Pebble (Basalt (Mafic Igneous Rock)) — igneous

Basalt Pebble

Basalt (Mafic Igneous Rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Chert (Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Basalt (Weathered/River worn) (Mafic Volcanic Rock (Primarily Plagioclase Feldspar and Pyroxene)) — igneous

Basalt (Weathered/River worn)

Mafic Volcanic Rock (Primarily Plagioclase Feldspar and Pyroxene)

Limestone with Chert Nodules (Sedimentary Calcium Carbonate (CaCO3) with Microcrystalline Silica (SiO2) inclusions) — sedimentary

Limestone with Chert Nodules

Sedimentary Calcium Carbonate (CaCO3) with Microcrystalline Silica (SiO2) inclusions

Quartzite Cobble (Metamorphosed Sandstone (SiO2)) — metamorphic

Quartzite Cobble

Metamorphosed Sandstone (SiO2)

Basalt with Vesicle/Vug (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt with Vesicle/Vug

Basalt (Aphanitic Mafic Igneous Rock)

Banded Agate (Onyx type) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (Onyx type)

Silicon Dioxide (SiO2)

Red Sandstone (Clastic sedimentary rock (primarily SiO2 with Fe2O3)) — sedimentary

Red Sandstone

Clastic sedimentary rock (primarily SiO2 with Fe2O3)

Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone (Ferruginous) (Arenite (composed primarily of SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 cement)

Red Sandstone (Arenite (primarily Quartz with Hematite cement)) — sedimentary

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Sandstone with Iron Oxide Staining (Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone with Iron Oxide Staining

Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)

Red Sandstone (Arenite with iron oxide (Hematite) cement) — sedimentary

Red Sandstone

Arenite with iron oxide (Hematite) cement

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

Sandstone (Quartzose)

Arenite (primarily SiO2)

Red Sandstone (Arenite (with Iron Oxide)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide)

Sandstone (with Iron Staining) (Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)) — sedimentary

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)

Granite (Intrusive igneous felsic rock) — igneous

Granite

Intrusive igneous felsic rock

Pink Granite (Phaneritic Felsic Igneous Rock) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock

Granite (Phaneritic Plutonic Felsic Rock) — igneous

Granite

Phaneritic Plutonic Felsic Rock

Schist (Lepidoblastic Mica Schist) — metamorphic

Schist

Lepidoblastic Mica Schist

Basalt (Vesicular) (Vesicular Basalt) — Igneous

Basalt (Vesicular)

Vesicular Basalt

Basalt (Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)) — igneous

Basalt

Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O