Rock Identifier

Category

Sedimentary And Metamorphic

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

Gneiss (specifically Pink Gneiss) (Gneiss (high-grade regional metamorphic rock)) — metamorphic

Gneiss (specifically Pink Gneiss)

Gneiss (high-grade regional metamorphic rock)

Gneiss (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade regional metamorphic rock)

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

Marble

Metamorphosed Limestone (main mineral: Calcite, CaCO3)

Iron-Stained Quartzite (Recrystallized Meta-Quartzite (primarily SiO2)) — metamorphic

Iron-Stained Quartzite

Recrystallized Meta-Quartzite (primarily SiO2)

Gneiss (specifically Granitic Gneiss) (Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)) — metamorphic

Gneiss (specifically Granitic Gneiss)

Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)

Mica Schist with Pyrite (Muscovite/Biotite Schist (Complex Silicate)) — metamorphic

Mica Schist with Pyrite

Muscovite/Biotite Schist (Complex Silicate)

Gneiss (specifically Banded Gneiss) (Gneiss) — metamorphic

Gneiss (specifically Banded Gneiss)

Gneiss

Granite Gneiss (Felsic Gneiss) — metamorphic

Granite Gneiss

Felsic Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Banded Gneiss) (Gneiss) — metamorphic

Gneiss (Banded Gneiss)

Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Garnet Schist (Garnetiferous Mica Schist) — metamorphic

Garnet Schist

Garnetiferous Mica Schist

Green Aventurine (Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine

Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Marble (Metamorphosed Limestone/Dolomite) — metamorphic

Marble

Metamorphosed Limestone/Dolomite

Marble (Recrystallized Calcite Rock (CaCO3)) — metamorphic

Marble

Recrystallized Calcite Rock (CaCO3)

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

Almandine Garnet in Matrix

Almandine (Fe3Al2(SiO4)3)

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

White Marble (Calcite-rich Metasomatized Carbonate (CaCO3)) — metamorphic

White Marble

Calcite-rich Metasomatized Carbonate (CaCO3)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Banded Quartzite (Quartzite (SiO2 with impurities)) — metamorphic

Banded Quartzite

Quartzite (SiO2 with impurities)

Anthracite Coal (Anthracite (Carbon-rich metamorphic coal)) — metamorphic

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Banded Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade metamorphic rock)

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Marble (Recrystallized Carbonate Rock (CaCO3)) — metamorphic

Marble

Recrystallized Carbonate Rock (CaCO3)

Granite Gneiss (High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)) — metamorphic

Granite Gneiss

High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Quartzite River Cobble (Quartzite (SiO2)) — metamorphic

Quartzite River Cobble

Quartzite (SiO2)

Anthracite Coal (Anthracite (high-rank coal)) — metamorphic

Anthracite Coal

Anthracite (high-rank coal)

Anthracite Coal (High-rank coal (primarily Carbon, C)) — metamorphic

Anthracite Coal

High-rank coal (primarily Carbon, C)

Hematite (Iron Ore) (Hematite (Fe2O3)) — mineral

Hematite (Iron Ore)

Hematite (Fe2O3)

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

Quartz (Milky or Druzy Quartz)

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Quartz (Clear/White) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear/White)

Silicon Dioxide (SiO2)

Blue Calcite (Calcium Carbonate (CaCO3)) — Mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Quartz (Milky or Cloudy Quartz)

Silicon Dioxide (SiO2)

Hematite (Tumbled) (Iron(III) oxide (Fe2O3)) — mineral

Hematite (Tumbled)

Iron(III) oxide (Fe2O3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)