Rock Identifier

Category

Metamorphic And Igneous Rocks

Browse metamorphic and igneous rocks specimens identified by the Rock Identifier community.

Learn about Metamorphic And Igneous Rocks in the encyclopedia

Cordierite Hornfels

Cordierite Hornfels

Migmatite

Hornblende Schist

Hornblende Schist

Chlorite Schist

Chlorite Schist

Talc Schist

Talc-carbonate Rock

Talc-carbonate Rock

Epidosite

Feldspar

Chromite

Schorlomite

Goldmanite

Kokchetavite

Muscovite Mica (KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Mica flakes (Muscovite) (Muscovite mica (KAl2(AlSi3O10)(F,OH)2)) — mineral

Mica flakes (Muscovite)

Muscovite mica (KAl2(AlSi3O10)(F,OH)2)

Seven Chakra Bonded Stone (Bonded composite of Red Jasper, Carnelian, Tiger's Eye, Aventurine, Lapis Lazuli, Amethyst, and Clear Quartz) — metamorphic

Seven Chakra Bonded Stone

Bonded composite of Red Jasper, Carnelian, Tiger's Eye, Aventurine, Lapis Lazuli, Amethyst, and Clear Quartz

Muscovite (Muscovite, KAl2(AlSi3O10)(OH)2) — mineral

Muscovite

Muscovite, KAl2(AlSi3O10)(OH)2

Almandine Garnet (Almandine (Fe3Al2(SiO4)3)) — gemstone

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Graphite (Graphite (C)) — mineral

Graphite

Graphite (C)

Fossilized marine shell fragment (Likely a bivalve or gastropod shell preserved as calcite (CaCO₃)) — fossil

Fossilized marine shell fragment

Likely a bivalve or gastropod shell preserved as calcite (CaCO₃)

Blue Sapphire (Corundum (Al2O3 with trace amounts of iron and titanium)) — mineral

Blue Sapphire

Corundum (Al2O3 with trace amounts of iron and titanium)

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz vein in mica-rich host rock (Milky quartz (SiO₂) in a mica-rich metamorphic matrix, likely schist) — metamorphic

Quartz vein in mica-rich host rock

Milky quartz (SiO₂) in a mica-rich metamorphic matrix, likely schist

Epidote (Calcium aluminum iron silicate hydroxide, Ca2(Al, Fe)3(SiO4)3(OH)) — mineral

Epidote

Calcium aluminum iron silicate hydroxide, Ca2(Al, Fe)3(SiO4)3(OH)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Sand Grain (Quartz / Feldspar) (Silicon dioxide (SiO2) or Potassium Feldspar (KAlSi3O8)) — mineral

Sand Grain (Quartz / Feldspar)

Silicon dioxide (SiO2) or Potassium Feldspar (KAlSi3O8)

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

K-Feldspar

Potassium feldspar (KAlSi3O8)

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon dioxide (SiO2)) — mineral

Quartz

Silicon dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — gemstone

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz with Chalcopyrite and Pyrite (Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)) — mineral

Quartz with Chalcopyrite and Pyrite

Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)

Likely brown mica (biotite) specimen (Biotite, a potassium-iron-magnesium sheet silicate; approximate formula K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂) — mineral

Likely brown mica (biotite) specimen

Biotite, a potassium-iron-magnesium sheet silicate; approximate formula K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂

Muscovite (KAl2(AlSi3O10)(OH)2) — mineral

Muscovite

KAl2(AlSi3O10)(OH)2

Almandine Garnet (Almandine, Fe3Al2(SiO4)3) — mineral

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Muscovite (KAl2(AlSi3O10)(OH)2) — mineral

Muscovite

KAl2(AlSi3O10)(OH)2

Almandine Garnet (Almandine, Fe3Al2(SiO4)3) — mineral

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Biotite / Black Mica (K(Mg,Fe)3(AlSi3O10)(F,OH)2) — mineral

Biotite / Black Mica

K(Mg,Fe)3(AlSi3O10)(F,OH)2

Muscovite Mica (Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2) — mineral

Muscovite Mica

Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Greenstone or Epidote-rich rock (Epidote or Chlorite schist/greenstone) — metamorphic

Greenstone or Epidote-rich rock

Epidote or Chlorite schist/greenstone

Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) — mineral

Epidote

Ca2(Al, Fe)3(SiO4)3(OH)

Epidote (Epidote (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Sunstone / Peach Moonstone (Feldspar variety) (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Sunstone / Peach Moonstone (Feldspar variety)

Potassium Aluminum Silicate (KAlSi3O8)

Likely feldspar (rough specimen) (Probably potassium feldspar, KAlSi₃O₈; exact identification is uncertain from the image) — mineral

Likely feldspar (rough specimen)

Probably potassium feldspar, KAlSi₃O₈; exact identification is uncertain from the image

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

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

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

Feldspar (Potassium Feldspar / Orthoclase)

KAlSi3O8 (Potassium Aluminum Silicate)

Black Tourmaline (Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH,F)4)) — mineral

Black Tourmaline

Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH,F)4)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Yellow Citrine (Silicon Dioxide (Quartz variety), SiO2) — mineral

Yellow Citrine

Silicon Dioxide (Quartz variety), SiO2

Clear Quartz (Faceted) (Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Faceted)

Silicon Dioxide (SiO2)

Citrine (Silicon dioxide (SiO2)) — gemstone

Citrine

Silicon dioxide (SiO2)