Rock Identifier

Category

Igneous, Sedimentary, Metamorphic, And Mineral

Browse igneous, sedimentary, metamorphic, and mineral specimens identified by the Rock Identifier community.

Quartz (likely milky/gray variety) (Quartz (SiO₂)) — Mineral

Quartz (likely milky/gray variety)

Quartz (SiO₂)

Mineral
Epidote in Quartz (Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) in Milky Quartz (SiO2)) — metamorphic

Epidote in Quartz

Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) in Milky Quartz (SiO2)

metamorphic
Specular Hematite (on Schist/Matrix) (Hematite (Alpha-Fe2O3)) — mineral

Specular Hematite (on Schist/Matrix)

Hematite (Alpha-Fe2O3)

mineral
Potassium Feldspar (K-Feldspar (KAlSi3O8)) — mineral

Potassium Feldspar

K-Feldspar (KAlSi3O8)

mineral
Lapis Lazuli (Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)) — metamorphic

Lapis Lazuli

Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)

metamorphic
Pyrite (Pyrite (Iron Disulfide), FeS2) — Mineral

Pyrite

Pyrite (Iron Disulfide), FeS2

Mineral
Pyrite-rich Ore (Pyrite (FeS2) with secondary minerals) — mineral

Pyrite-rich Ore

Pyrite (FeS2) with secondary minerals

mineral
Granitic Pegmatite (Muscovite and Quartz) (Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)) — igneous

Granitic Pegmatite (Muscovite and Quartz)

Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)

igneous
Quartz (Engineered Stone Countertop) (Silicon Dioxide (SiO2) within a resin matrix) — igneous

Quartz (Engineered Stone Countertop)

Silicon Dioxide (SiO2) within a resin matrix

igneous
Orthoclase Feldspar (KAlSi3O8 (Potassium Aluminum Silicate)) — Mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Mineral
Quartz (Silicon Dioxide (SiO₂)) — Mineral

Quartz

Silicon Dioxide (SiO₂)

Mineral
Milky Quartz with Iron Inclusions (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

mineral
Almandine Garnet in Schist (Almandine, Fe3Al2(SiO4)3) — metamorphic

Almandine Garnet in Schist

Almandine, Fe3Al2(SiO4)3

metamorphic
Rainbow Moonstone with Black Tourmaline (White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Rainbow Moonstone with Black Tourmaline

White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

mineral
Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Mineral
Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Silicon dioxide (SiO₂)) — Mineral

Quartz

Silicon dioxide (SiO₂)

Mineral
Muscovite Mica (with Quartz) (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica (with Quartz)

Muscovite (KAl2(AlSi3O10)(OH)2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Magnetite (likely in Hematite or Ironstone) (Magnetite (Fe3O4)) — mineral

Magnetite (likely in Hematite or Ironstone)

Magnetite (Fe3O4)

mineral
Kyanite (Blue Kyanite) (Kyanite (Al2SiO5)) — mineral

Kyanite (Blue Kyanite)

Kyanite (Al2SiO5)

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

Labradorite (Carved)

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

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

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

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

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

mineral
Granitic Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Granitic Gneiss

Gneiss (High-grade metamorphic rock)

metamorphic
Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Mineral
Staurolite (Fairy Cross) (Staurolite (Fe2+2Al9Si4O23(OH))) — metamorphic

Staurolite (Fairy Cross)

Staurolite (Fe2+2Al9Si4O23(OH))

metamorphic
Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

mineral
Soapstone / Steatite (Steatite (primarily Talc, Mg3Si4O10(OH)2)) — metamorphic

Soapstone / Steatite

Steatite (primarily Talc, Mg3Si4O10(OH)2)

metamorphic
Quartz (Smoky/Granular variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky/Granular variety)

Silicon Dioxide (SiO2)

mineral
Quartz / Calcite Vein Rock (Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)) — mineral

Quartz / Calcite Vein Rock

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

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

Citrine Quartz

Silicon Dioxide (SiO2)

mineral
Greenschist (Greenschist facies rock (containing chlorite, actinolite, and epidote)) — metamorphic

Greenschist

Greenschist facies rock (containing chlorite, actinolite, and epidote)

metamorphic
Citrine (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine

Silicon Dioxide (SiO2) with iron impurities

mineral
Pyrite (Pyrite (Iron sulfide, FeS₂)) — mineral

Pyrite

Pyrite (Iron sulfide, FeS₂)

mineral
Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

metamorphic
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Amethyst (Polished/Carved Crystal) (Silicon Dioxide (SiO2) with trace Iron (Fe)) — mineral

Amethyst (Polished/Carved Crystal)

Silicon Dioxide (SiO2) with trace Iron (Fe)

mineral
Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Calcite

Calcite (Calcium Carbonate, CaCO3)

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

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

mineral
Banded Gneiss (Gneiss (pronounced "nice")) — metamorphic

Banded Gneiss

Gneiss (pronounced "nice")

metamorphic
Greenstone (Chlorite schist or metabasalt depending on specific composition) — Metamorphic

Greenstone

Chlorite schist or metabasalt depending on specific composition

Metamorphic