Rock Identifier

Category

Igneous, Sedimentary, Or Metamorphic (Mineral Based)

Browse igneous, sedimentary, or metamorphic (mineral based) specimens identified by the Rock Identifier community.

Quartz Pebble (Silicon Dioxide (SiO2)) — Mineral / Sedimentary occurrence

Quartz Pebble

Silicon Dioxide (SiO2)

Mineral / Sedimentary occurrence

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Corundum (Sapphire in Host Rock) (Corundum (Aluminum Oxide, Al2O3)) — mineral

Corundum (Sapphire in Host Rock)

Corundum (Aluminum Oxide, Al2O3)

Fluorite, Turquoise, and Calcite set (Calcium Fluoride (CaF2), Hydrous Phosphate of Copper and Aluminum (CuAl6(PO4)4(OH)8·4H2O), Calcium Carbonate (CaCO3)) — mineral

Fluorite, Turquoise, and Calcite set

Calcium Fluoride (CaF2), Hydrous Phosphate of Copper and Aluminum (CuAl6(PO4)4(OH)8·4H2O), Calcium Carbonate (CaCO3)

Stichtite in Serpentine (Atlantasite) (Mg6Cr2CO3(OH)16·4H2O in Mg3Si2O5(OH)4) — metamorphic

Stichtite in Serpentine (Atlantasite)

Mg6Cr2CO3(OH)16·4H2O in Mg3Si2O5(OH)4

Ruby (Corundum) (Corundum (Aluminum Oxide with Chromium), Al2O3:Cr) — mineral

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Schist (Mica Schist (primarily Muscovite and Quartz)) — metamorphic

Schist

Mica Schist (primarily Muscovite and Quartz)

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

Bull Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz (with trace inclusions) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (with trace inclusions)

Silicon Dioxide (SiO2)

Milky Quartz with Chlorite/Moss Infusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Chlorite/Moss Infusions

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Lepidolite (Lepidolite [K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2]) — Mineral

Lepidolite

Lepidolite [K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2]

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Quartz with Mica inclusions (Pegmatite) (Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions) — igneous

Quartz with Mica inclusions (Pegmatite)

Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Emerald (Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities) — mineral

Emerald

Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities

Labradorite (Labradorite ((Ca,Na)(Al,Si)4O8)) — mineral

Labradorite

Labradorite ((Ca,Na)(Al,Si)4O8)

Shale (Clastic sedimentary rock (primarily clay and silt minerals)) — sedimentary

Shale

Clastic sedimentary rock (primarily clay and silt minerals)

Smoky Quartz (Smoky Quartz (SiO2)) — mineral

Smoky Quartz

Smoky Quartz (SiO2)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Potassium Feldspar (Orthoclase (KAlSi3O8)) — mineral

Potassium Feldspar

Orthoclase (KAlSi3O8)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Slate with Iron Staining (Low-grade Metamorphic Mudstone (Slate)) — metamorphic

Slate with Iron Staining

Low-grade Metamorphic Mudstone (Slate)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Ruby Zoisite (Anyolite (Composition of Green Zoisite, Black Tschermakite, and Red Corundum)) — metamorphic

Ruby Zoisite

Anyolite (Composition of Green Zoisite, Black Tschermakite, and Red Corundum)

Ruby in Matrix (Corundum (Al2O3)) — mineral

Ruby in Matrix

Corundum (Al2O3)

Stilbite (Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)) — mineral

Stilbite

Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Basalt (Amygdaloidal) (Amygdaloidal Basalt) — igneous

Basalt (Amygdaloidal)

Amygdaloidal Basalt

Blue Quartz (Quartz (Silicon Dioxide) with blue inclusions (SiO2)) — mineral

Blue Quartz

Quartz (Silicon Dioxide) with blue inclusions (SiO2)

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

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Basalt with Amygdaloidal Inclusions (Aphanitic Mafic Volcanic Rock (Basalt)) — igneous

Basalt with Amygdaloidal Inclusions

Aphanitic Mafic Volcanic Rock (Basalt)

Sodalite (Sodalite (Na8Al6Si6O24Cl2)) — mineral

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Amphibolite (Amphibolite) — metamorphic

Amphibolite

Amphibolite

Banded Rock (likely Quartz-rich) (Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals) — Mineral

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals

Greenschist (Chlorite-actinolite schist) — metamorphic

Greenschist

Chlorite-actinolite schist

Orthoclase Feldspar (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)