Rock Identifier

Category

Igneous, Metamorphic, And Sedimentary

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

Learn about Igneous, Metamorphic, And Sedimentary in the encyclopedia

Cordierite Hornfels

Cordierite Hornfels

Migmatite

Hornblende Schist

Hornblende Schist

Goldmanite

Hyalophane

Paracelsian

Andesine

Barium Feldspar

Barium Feldspar

Andesite

Andalusite

Gahnite

Celsian

Lapis Lazuli (Na8(Al6Si6O24)S2 (composed primarily of Lazurite, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Na8(Al6Si6O24)S2 (composed primarily of Lazurite, Calcite, and Pyrite)

Greenschist (Greenstone) (Chlorite schist (primarily Chlorite-Epidote-Actinolite-Albite)) — metamorphic

Greenschist (Greenstone)

Chlorite schist (primarily Chlorite-Epidote-Actinolite-Albite)

Greenstone (Greenschist-facies basaltic rock) — metamorphic

Greenstone

Greenschist-facies basaltic rock

Quartz (Silicon Dioxide (SiO₂)) — Mineral

Quartz

Silicon Dioxide (SiO₂)

Greenstone (metamorphosed basalt) (Greenschist / Meta-basalt) — metamorphic

Greenstone (metamorphosed basalt)

Greenschist / Meta-basalt

Corundum (Sapphire variant) (Aluminum Oxide (Al2O3)) — mineral

Corundum (Sapphire variant)

Aluminum Oxide (Al2O3)

Tiger's Iron (Pseudomorphic Quartz Aggregate (contains SiO2 with Fe2O3 and FeOOH)) — metamorphic

Tiger's Iron

Pseudomorphic Quartz Aggregate (contains SiO2 with Fe2O3 and FeOOH)

Blue Kyanite (Kyanite (Al2SiO5)) — metamorphic

Blue Kyanite

Kyanite (Al2SiO5)

Quartzite River Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite River Pebble

Metamorphic Quartzite (SiO2)

Epidote in Quartz (Epidote (Ca2(Al2,Fe3+)3(SiO4)3(OH)) / Quartz (SiO2)) — metamorphic

Epidote in Quartz

Epidote (Ca2(Al2,Fe3+)3(SiO4)3(OH)) / Quartz (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Pink Sapphire (Corundum) (Aluminum Oxide (Al2O3) with Chromium/Iron impurities) — gemstone

Pink Sapphire (Corundum)

Aluminum Oxide (Al2O3) with Chromium/Iron impurities

Chiastolite (Andalusite variety Chiastolite) — mineral

Chiastolite

Andalusite variety Chiastolite

Blue Sapphire (Corundum (Al2O3)) — gemstone

Blue Sapphire

Corundum (Al2O3)

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

Gold Ore (Native Gold (Au) in Quartz or Silicate matrix) — mineral

Gold Ore

Native Gold (Au) in Quartz or Silicate matrix

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Feldspar (likely Orthoclase or Plagioclase) (Tectosilicate Feldspar (KAlSi3O8 to (Ca,Na)(Al,Si)4O8)) — mineral

Feldspar (likely Orthoclase or Plagioclase)

Tectosilicate Feldspar (KAlSi3O8 to (Ca,Na)(Al,Si)4O8)

Amethyst and Smoky Quartz (Tumbled) (Silicon Dioxide (SiO2) with trace impurities iron (Amethyst) and aluminum/radiation (Smoky Quartz)) — mineral

Amethyst and Smoky Quartz (Tumbled)

Silicon Dioxide (SiO2) with trace impurities iron (Amethyst) and aluminum/radiation (Smoky Quartz)

Smoky Quartz (Silicon Dioxide (SiO2)) — gemstone

Smoky Quartz

Silicon Dioxide (SiO2)

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

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

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

White Quartz Pebble

Silicon Dioxide (SiO2)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Citrine Quartz / Iron-stained Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz / Iron-stained Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Dyed Tumbled Quartz (Silicon Dioxide (SiO2)) — mineral

Dyed Tumbled Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Red Garnet (Pyrope-Almandine series (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)) — mineral

Red Garnet

Pyrope-Almandine series (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — Mineral

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Blue Apatite (Apatite group (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Apatite group (Ca5(PO4)3(F,Cl,OH))

Plagioclase Feldspar (Plagioclase (NaAlSi3O8 - CaAl2Si2O8 series)) — mineral

Plagioclase Feldspar

Plagioclase (NaAlSi3O8 - CaAl2Si2O8 series)

Banded Agate (Cryptocrystalline Silicon Dioxide (SiO2)) — mineral

Banded Agate

Cryptocrystalline Silicon Dioxide (SiO2)

Moonstone (Orthoclase Feldspar ((K,Na)AlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar ((K,Na)AlSi3O8)

Blue Apatite (Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)) — mineral

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

Orthoclase Feldspar (Potassium aluminum silicate (KAlSi3O8)) — mineral

Orthoclase Feldspar

Potassium aluminum silicate (KAlSi3O8)

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

Yellow Quartz (Citrine appearance)

Silicon Dioxide (SiO2)

Black Tourmaline (Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4) — mineral

Black Tourmaline

Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4

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

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)