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

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

Almandine Garnet in Schist

Almandine, Fe3Al2(SiO4)3

Clear Quartz (beads in a bracelet) (Quartz (SiO2)) — Mineral

Clear Quartz (beads in a bracelet)

Quartz (SiO2)

Anthracite Coal (Anthracite) — sedimentary

Anthracite Coal

Anthracite

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Limonite pseudomorph after Pyrite (Goethite/Limonite FeO(OH)·nH2O) — mineral

Limonite pseudomorph after Pyrite

Goethite/Limonite FeO(OH)·nH2O

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Pyrite in Shale (Iron Sulfide (FeS2)) — mineral

Pyrite in Shale

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyritic Quartzite (Quartzite with Pyrite inclusions (FeS2)) — metamorphic

Pyritic Quartzite

Quartzite with Pyrite inclusions (FeS2)

Mica Schist (Muscovite Schist (KAl2(AlSi3O10)(OH)2)) — metamorphic

Mica Schist

Muscovite Schist (KAl2(AlSi3O10)(OH)2)

Epidosite (Epidote-rich rock) (Epidosite (consisting primarily of Epidote: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))) — metamorphic

Epidosite (Epidote-rich rock)

Epidosite (consisting primarily of Epidote: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Soapstone (Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)) — metamorphic

Soapstone

Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)

Pegmatite with Black Tourmaline (Granitic Pegmatite with Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)) — igneous

Pegmatite with Black Tourmaline

Granitic Pegmatite with Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)

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

Granitic Pegmatite (Muscovite and Quartz)

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

Serpentine (Serpentine Group (primarily Antigorite or Lizardite), Mg3Si2O5(OH)4) — metamorphic

Serpentine

Serpentine Group (primarily Antigorite or Lizardite), Mg3Si2O5(OH)4

Dalmatian Jasper (Peralkaline Feldspar Rhyolite) — igneous

Dalmatian Jasper

Peralkaline Feldspar Rhyolite

Dalmatian Stone (Dalmatian Jasper (Aplitic Rock)) — igneous

Dalmatian Stone

Dalmatian Jasper (Aplitic Rock)

Dalmatian Jasper (Peralkaline Quartz Feldspar Porphyry) — igneous

Dalmatian Jasper

Peralkaline Quartz Feldspar Porphyry

Dalmatian Jasper (Dalmatian Stone (comprised of Feldspar, Quartz, and Arfvedsonite)) — igneous

Dalmatian Jasper

Dalmatian Stone (comprised of Feldspar, Quartz, and Arfvedsonite)

Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

Mica Schist with Quartz (Mica-Quartz Schist (Muscovite subclass)) — metamorphic

Mica Schist with Quartz

Mica-Quartz Schist (Muscovite subclass)

Garnet Schist (Almandine Garnet in Mica Schist) — metamorphic

Garnet Schist

Almandine Garnet in Mica Schist

Serpentine (Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4) — metamorphic

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4

Quartzite Beach Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Beach Pebble

Quartzite (primarily SiO2)

Phyllite (Phyllite) — metamorphic

Phyllite

Phyllite

Orthoclase Feldspar (or K-Feldspar) (Orthoclase (KAlSi3O8)) — Mineral

Orthoclase Feldspar (or K-Feldspar)

Orthoclase (KAlSi3O8)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Slate (Slate (foliated metamorphic rock)) — metamorphic

Slate

Slate (foliated metamorphic rock)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

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

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Almandine Garnet (Iron aluminum silicate - Fe3Al2(SiO4)3) — metamorphic

Almandine Garnet

Iron aluminum silicate - Fe3Al2(SiO4)3

Shungite (Non-crystalline carbon (high-carbon metamorphic rock)) — metamorphic

Shungite

Non-crystalline carbon (high-carbon metamorphic rock)

Marble (Recrystallized Calcite (CaCO3) / Marble) — metamorphic

Marble

Recrystallized Calcite (CaCO3) / Marble

Marble (Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)) — metamorphic

Marble

Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)

Kyanite in Quartz (Kyanite (Al2SiO5) with Quartz (SiO2)) — metamorphic

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)