Rock Identifier

Category

Sedimentary And Metamorphic

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

Learn about Sedimentary And Metamorphic in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Metabasalt

Eulysite

Breccia

Ironstone

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

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

Gneiss

Gneiss (High-grade metamorphic rock)

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

Granite Gneiss

Gneiss (High-grade metamorphic rock)

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

Gneiss

High-grade metamorphic rock (Gneiss)

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

Gneiss

Gneiss (High-grade Metamorphic Rock)

Dark gray slate (possibly argillite or shale) (Slate, a low-grade metamorphic rock derived mainly from shale; composition commonly quartz, illite/muscovite, chlorite, and clay minerals) — metamorphic

Dark gray slate (possibly argillite or shale)

Slate, a low-grade metamorphic rock derived mainly from shale; composition commonly quartz, illite/muscovite, chlorite, and clay minerals

Water and Silt (Sedimentary Environment) (Suspended Sediment / H2O (dihydrogen monoxide)) — sedimentary

Water and Silt (Sedimentary Environment)

Suspended Sediment / H2O (dihydrogen monoxide)

Graphite Schist (C (Carbonaceous Schist)) — metamorphic

Graphite Schist

C (Carbonaceous Schist)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Pink Gneiss / Pink Granite Gneiss (Felsic Gneiss (dominated by Orthoclase Feldspar and Quartz)) — metamorphic

Pink Gneiss / Pink Granite Gneiss

Felsic Gneiss (dominated by Orthoclase Feldspar and Quartz)

Quartzite Pebble (Quartzite) — metamorphic

Quartzite Pebble

Quartzite

Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

Yellow Quartzite or Yellow Jasper (Quartzite (primarily SiO2 with Iron oxide staining)) — metamorphic

Yellow Quartzite or Yellow Jasper

Quartzite (primarily SiO2 with Iron oxide staining)

Quartzite River Rock (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Rock

Quartzite (primarily SiO2)

River Stones (Quartzite and Sandstone) (Quartzite / Sedimentary Rock (SiO2 dominant)) — sedimentary

River Stones (Quartzite and Sandstone)

Quartzite / Sedimentary Rock (SiO2 dominant)

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

Gneiss

Gneiss (High-grade Metamorphic Rock)

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

Hematite

Iron(III) oxide (Fe2O3)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Biotite (Black Mica)

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

Anthracite Coal (Anthracite (Metamorphic/High-grade Coal)) — sedimentary

Anthracite Coal

Anthracite (Metamorphic/High-grade Coal)

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

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

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

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

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

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Honey calcite (likely rough cleavage fragment) (Calcite, calcium carbonate (CaCO₃)) — mineral

Honey calcite (likely rough cleavage fragment)

Calcite, calcium carbonate (CaCO₃)

Garnet Schist (Almandine Garnet Schist) — metamorphic

Garnet Schist

Almandine Garnet Schist

Banded Gneiss (Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica)) — metamorphic

Banded Gneiss

Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica)

Petrified Wood (Silicified Wood) (Silicified fossil wood (SiO2)) — metamorphic

Petrified Wood (Silicified Wood)

Silicified fossil wood (SiO2)

Graphite-rich schist (likely graphite ore) (Graphite-bearing schist; predominantly graphitic carbon (C) with mica, quartz, and possible feldspar) — metamorphic

Graphite-rich schist (likely graphite ore)

Graphite-bearing schist; predominantly graphitic carbon (C) with mica, quartz, and possible feldspar

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Red Jasper (Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

River Pebble (Gneiss / Granitic Schist) (Metamorphic Rock (Quartz-Feldspar-Mica assembly)) — metamorphic

River Pebble (Gneiss / Granitic Schist)

Metamorphic Rock (Quartz-Feldspar-Mica assembly)

Nuummite (Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)) — metamorphic

Nuummite

Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)

Schist (specifically Chlorite/Greenschist) (Chlorite Schist) — metamorphic

Schist (specifically Chlorite/Greenschist)

Chlorite Schist

Quartzite (Quartzite (SiO2)) — Metamorphic

Quartzite

Quartzite (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Quartz (Citrine / Yellow Quartz)

Silicon Dioxide (SiO2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Tiger's Eye (Silicon Dioxide with Crocidolite inclusions (SiO2)) — gemstone

Tiger's Eye

Silicon Dioxide with Crocidolite inclusions (SiO2)

Hematite (Polished / Tumbled) (Iron Oxide (Fe2O3)) — mineral

Hematite (Polished / Tumbled)

Iron Oxide (Fe2O3)

Metallic sulfide mineral specimen, likely pyrite (Pyrite (FeS₂), possibly a pyrite-rich sulfide aggregate) — mineral

Metallic sulfide mineral specimen, likely pyrite

Pyrite (FeS₂), possibly a pyrite-rich sulfide aggregate