Rock Identifier

Category

Metamorphic And Igneous

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

Green Slate (Greenstone) (Foliated Metamorphic Rock (rich in Chlorite/Epidote)) — metamorphic

Green Slate (Greenstone)

Foliated Metamorphic Rock (rich in Chlorite/Epidote)

Quartzite (Metamorphic rock predominantly composed of Quartz (SiO2)) — metamorphic

Quartzite

Metamorphic rock predominantly composed of Quartz (SiO2)

Quartzite Pebble (Metamorphic rock predominantly composed of Quartz (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic rock predominantly composed of Quartz (SiO2)

Schist (Mica Schist (Medium-grade metamorphic rock)) — metamorphic

Schist

Mica Schist (Medium-grade metamorphic rock)

Quartz on Schist (Silicon Dioxide (SiO2) on Foliated Metamorphic Rock) — metamorphic

Quartz on Schist

Silicon Dioxide (SiO2) on Foliated Metamorphic Rock

Red Quartzite River Stone (Metamorphic Rock (composed mainly of Quartz, SiO2)) — metamorphic

Red Quartzite River Stone

Metamorphic Rock (composed mainly of Quartz, SiO2)

Quartzite (Milky) (Metamorphic rock predominantly composed of Quartz (SiO2)) — metamorphic

Quartzite (Milky)

Metamorphic rock predominantly composed of Quartz (SiO2)

Quartzite with Quartz Geode / Vug (Crystalline Silicon Dioxide (SiO2) in Metamorphic Host) — metamorphic

Quartzite with Quartz Geode / Vug

Crystalline Silicon Dioxide (SiO2) in Metamorphic Host

Mica Schist (Mica Schist (Intermediate-grade Metamorphic Rock)) — metamorphic

Mica Schist

Mica Schist (Intermediate-grade Metamorphic Rock)

Slate (Slate (Low-grade foliated metamorphic rock)) — metamorphic

Slate

Slate (Low-grade foliated metamorphic rock)

Lapis Lazuli (Lazurite-dominant Metamorphic Rock (complex aluminosilicate)) — metamorphic

Lapis Lazuli

Lazurite-dominant Metamorphic Rock (complex aluminosilicate)

River Pebble (Likely Quartzite or Chalcedony) (Silicon Dioxide (SiO2) - granular metamorphic variety) — metamorphic

River Pebble (Likely Quartzite or Chalcedony)

Silicon Dioxide (SiO2) - granular metamorphic variety

Quartz Vein in Host Rock (Gneiss/Schist) (Silicon Dioxide (SiO2) within a metamorphic matrix) — metamorphic

Quartz Vein in Host Rock (Gneiss/Schist)

Silicon Dioxide (SiO2) within a metamorphic matrix

Banded Gneiss (River Cobble) (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Banded Gneiss (River Cobble)

Gneiss (High-grade regional metamorphic rock)

Anthracite Coal (Anthracite (Carbon-based sedimentary-metamorphic rock)) — metamorphic

Anthracite Coal

Anthracite (Carbon-based sedimentary-metamorphic rock)

Pink Quartzite Pebble (Metamorphic Quartzite (SiO2 with iron oxide inclusions)) — metamorphic

Pink Quartzite Pebble

Metamorphic Quartzite (SiO2 with iron oxide inclusions)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Red Quartzite (Quartzite (primarily SiO2)) — metamorphic

Red Quartzite

Quartzite (primarily SiO2)

Schist (Schist (primarily mica-schist)) — metamorphic

Schist

Schist (primarily mica-schist)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Red Quartzite (Quartzite (primarily SiO2)) — metamorphic

Red Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (primarily Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Nuummite (Orthoamphibole (mixture of Anthophyllite and Gedrite)) — metamorphic

Nuummite

Orthoamphibole (mixture of Anthophyllite and Gedrite)

Mica Schist (Mica Schist) — metamorphic

Mica Schist

Mica Schist

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

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Fuchsite (Chromium-bearing Muscovite - K(Al,Cr)2(AlSi3O10)(OH)2) — mineral

Fuchsite

Chromium-bearing Muscovite - K(Al,Cr)2(AlSi3O10)(OH)2

Marble (Metamorphosed Limestone (main mineral: Calcite, CaCO3)) — metamorphic

Marble

Metamorphosed Limestone (main mineral: Calcite, CaCO3)

White Marble (Recrystallized Calcite (CaCO3)) — metamorphic

White Marble

Recrystallized Calcite (CaCO3)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Mica Schist (Mica Schist (primarily Muscovite [KAl2(AlSi3O10)(OH)2] or Biotite)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite [KAl2(AlSi3O10)(OH)2] or Biotite)

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Orange Aventurine (Sunstone-style Quartzite) (Silicon Dioxide (SiO2) with Goethite or Hematite inclusions) — metamorphic

Orange Aventurine (Sunstone-style Quartzite)

Silicon Dioxide (SiO2) with Goethite or Hematite inclusions

Green Aventurine (Fuchsite-bearing Quartz) (Silicon Dioxide with Chromium-rich Muscovite (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine (Fuchsite-bearing Quartz)

Silicon Dioxide with Chromium-rich Muscovite (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Nuummite (Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)) — metamorphic

Nuummite

Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)

Quartzite (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite

Quartzite (SiO2 silicon dioxide)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)