Greenschist
Greenschist
metamorphic
Category
Metamorphic Rock (Primarily Composed Of Minerals)
Browse metamorphic rock (primarily composed of minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Primarily Composed Of Minerals) in the encyclopedia
View all →
Mica Schist
Mica Schist (Quartz-Biotite-Muscovite Schist)
metamorphic
Sandstone (Grooved/Weathered)
Arenite (composed primarily of Quartz and Lithic fragments)
sedimentary
Greenstone / Greenschist
Chlorite schist / Epidiorite
metamorphic
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
metamorphic
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Granite
Phaneritic Intrusive Igneous Rock (primarily composed of SiO2, Al2O3, K2O, Na2O)
igneous
Sandstone or Limestone
Arenite or Calcareous Sedimentary Rock
Sedimentary
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
metamorphic
Andesite
Andesite (Intermediate Extrusive Volcanic Rock)
igneous
Quartz (Milky/Crystalline)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Zebra Rock / Zebra Marble
Banded Limestone-Marble Transition
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Grey Agate (Tumbled)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (a specific type of sandstone with less than 15% matrix)
Sedimentary rock
Mica Schist
Muscovite/Biotite Schist
metamorphic
Gneiss
Gneiss
metamorphic
Garnetiferous Pegmatite
Pegmatite with Almandine Garnet and Muscovite
igneous
Sandstone (likely Graywacke or Lithic Arenite)
Clastic sedimentary rock predominantly composed of silicate grains
sedimentary
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
![Garnet-bearing Schist (Almandine Garnet [Fe3Al2(SiO4)3] in Micaceous Schist) — metamorphic](https://media.rock.id/9cd2761d-feab-4ba6-afa1-0e8fb7dce6d4-thumbnail.jpg)
Garnet-bearing Schist
Almandine Garnet [Fe3Al2(SiO4)3] in Micaceous Schist
metamorphic
Garnet Schist
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
metamorphic
Granite (with Almandine Garnet inclusions)
Granite composed primarily of Quartz (SiO2), K-Feldspar (KAlSi3O8), and Almandine Garnet (Fe3Al2(SiO4)3)
igneous
Quartzite with Iron Hydroxide Staining
Quartzite (primarily SiO2) with Limonite/Goethite staining
metamorphic
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Asphalt Concrete (Bituminous Pavement)
Aggregates in Bitumen Matrix
Technogenic / Anthropogenic Pavement Material
Garnet Schist
Almandine-Garnet Schist
metamorphic
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz
Quartz (SiO₂)
Mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Quartz (specifically Milky/Gray Quartz)
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Clastic Terrigenous Sedimentary Rock (composed mostly of SiO2 with Fe2O3)
sedimentary
Gneiss
High-grade regional metamorphic rock (Foliated)
metamorphic
Granite
Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica)
igneous
Sandstone with Manganese Dendrites
Clastic Sedimentary Rock (SiO2 based with MnO2 inclusions)
sedimentary
Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral