Rock Identifier

Category

Mineral_rock

Browse mineral_rock specimens identified by the Rock Identifier community.

Learn about Mineral_rock in the encyclopedia

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Halite

Dolomite

Gypsum

Coal

Claystone

Carbonatite

Serpentinite

Skarn

Schist

Shale

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Ironstone (with Limonite/Goethite) (Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O and Hematite Fe2O3)) — sedimentary

Ironstone (with Limonite/Goethite)

Ferruginous Sedimentary Rock (contains Limonite FeO(OH)·nH2O and Hematite Fe2O3)

Staurolite (Staurolite (Fe2Al9O6(SiO4)4(O,OH)2)) — mineral

Staurolite

Staurolite (Fe2Al9O6(SiO4)4(O,OH)2)

Chrysocolla (Chrysocolla (Cu2–xAlx(H2–xSi2O5)(OH)4·nH2O)) — mineral

Chrysocolla

Chrysocolla (Cu2–xAlx(H2–xSi2O5)(OH)4·nH2O)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Peacock Ore (Bornite (Cu5FeS4) or Chalcopyrite treated with acid) — mineral

Peacock Ore

Bornite (Cu5FeS4) or Chalcopyrite treated with acid

Citrine Quartz Geode (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz Geode

Silicon Dioxide (SiO2) with iron impurities

Bloodstone (Chalcedony (Variety Heliotrope), SiO2) — mineral

Bloodstone

Chalcedony (Variety Heliotrope), SiO2

Quartz with Feldspar and Matrix (Silicon Dioxide (SiO2) with Potassium/Plagioclase Feldspar) — mineral

Quartz with Feldspar and Matrix

Silicon Dioxide (SiO2) with Potassium/Plagioclase Feldspar

Lake Superior Agate (Silicon Dioxide (Chalcedony variety)) — gemstone

Lake Superior Agate

Silicon Dioxide (Chalcedony variety)

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

Botryoidal Quartz or Chalcedony (Silicon Dioxide (SiO2)) — mineral

Botryoidal Quartz or Chalcedony

Silicon Dioxide (SiO2)

Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — gemstone

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Amazonite (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Amazonite

KAlSi3O8 (Potassium Aluminum Silicate)

Banded Gneiss (Gneiss (SiO2 enriched metamorphic rock)) — metamorphic

Banded Gneiss

Gneiss (SiO2 enriched metamorphic rock)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Satin Spar Selenite

Gypsum (CaSO4·2H2O)

Green Aventurine (Quartz with fuchsite inclusions (SiO2)) — mineral

Green Aventurine

Quartz with fuchsite inclusions (SiO2)

Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O

Chromite (Chromite (FeCr2O4)) — mineral

Chromite

Chromite (FeCr2O4)

Weathered sandstone or granitic rock fragment (Likely quartz-rich sandstone; exact identification requires testing) — sedimentary

Weathered sandstone or granitic rock fragment

Likely quartz-rich sandstone; exact identification requires testing

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Geode Nodules / Keokuk Geode (Quartz / Chalcedony Geode (SiO2)) — sedimentary

Geode Nodules / Keokuk Geode

Quartz / Chalcedony Geode (SiO2)

Peridot (Olivine ((Mg,Fe)2SiO4)) — gemstone

Peridot

Olivine ((Mg,Fe)2SiO4)

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Moqui Marble (Iron Concretion) (Hematite/Goethite Concretion (Fe2O3 / FeO(OH))) — sedimentary

Moqui Marble (Iron Concretion)

Hematite/Goethite Concretion (Fe2O3 / FeO(OH))

Quartz (Citrine or Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Citrine or Iron-Stained)

Silicon Dioxide (SiO2)

Calcite (Optical or Clear Calcite) (Calcium Carbonate (CaCO3)) — mineral

Calcite (Optical or Clear Calcite)

Calcium Carbonate (CaCO3)

Geode with Iron-Stained Quartz/Calcite (Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix) — sedimentary

Geode with Iron-Stained Quartz/Calcite

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix

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))

Claystone Concretion (Septarian Concretion (Ironstone-rich)) — sedimentary

Claystone Concretion

Septarian Concretion (Ironstone-rich)

Quartz Vein in Basalt or Sedimentary Host Rock (Silica-veined lithic fragment (SiO2 in host matrix)) — sedimentary

Quartz Vein in Basalt or Sedimentary Host Rock

Silica-veined lithic fragment (SiO2 in host matrix)

Quartzite with Epidote Vein (Metamorphosed Quartz Sandstone with Hydrothermal Vein) — metamorphic

Quartzite with Epidote Vein

Metamorphosed Quartz Sandstone with Hydrothermal Vein

Note on Image Identification: Textile (N/A (Anthropogenic material)) — not a rock

Note on Image Identification: Textile

N/A (Anthropogenic material)

Blue-gray quartz-bearing metamorphic rock (likely gneiss or schist) (Quartz–feldspar–mica rock; exact identification requires testing) — metamorphic

Blue-gray quartz-bearing metamorphic rock (likely gneiss or schist)

Quartz–feldspar–mica rock; exact identification requires testing

Quartz Pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon dioxide (SiO2)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Fossil Shark Tooth (Elasmobranchii tooth fossil (e.g., Otodus / Carcharocles)) — fossil

Fossil Shark Tooth

Elasmobranchii tooth fossil (e.g., Otodus / Carcharocles)