Mica Schist
Mica Schist (predominantly Muscovite or Biotite series)
metamorphic
Category
Metamorphic (Likely Gneiss Or Schist Based On Texture)
Browse metamorphic (likely gneiss or schist based on texture) specimens identified by the Rock Identifier community.
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Blue Kyanite
Kyanite (Al2SiO5)
Mineral
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Quartz (Milky or Iron-stained)
Silicon Dioxide (SiO2)
mineral
Gneiss with Quartz Veining
Gneiss (High-grade Metamorphic Rock)
metamorphic
Mica Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Quartz Vein on Matrix
Silicon Dioxide (SiO2)
mineral
Pink Garnet (likely Almandine or Rhodolite)
Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
mineral
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (Metamorphic high-grade rock)
metamorphic
Gneiss
Gneiss
metamorphic
Granitic Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Rounded pebble, likely granite or granitic gneiss
Granite: quartz + feldspar + mica; the specimen may be a granitic metamorphic variant
igneous
Quartz-bearing metamorphic rock, likely garnet-mica schist
Quartz–mica schist with probable garnet and iron-oxide minerals
metamorphic
River Rock (Granitic Gneiss)
Foliated Granitic Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
River Cobble (Quartzite / Granitic Gneiss)
Metamorphic Quartzite / Granitic Gneiss
metamorphic
Chert (Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Raw Sapphire / Corundum
Corundum (Al2O3 - Aluminium oxide)
mineral
Milky Quartz with Mica Matrix
SiO2 (Silicon Dioxide) with Muscovite/Biotite mica
mineral
Mixed rock and mineral gravel
Predominantly granite/granodiorite, basaltic rocks, quartz, and possible gneiss; exact identification is uncertain from the image
igneous
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Greenstone
Metabasalt / Chlorite-Epidote Schist
metamorphic
Granite or Granitic Gneiss Pebble
Granite (felsic intrusive igneous rock) or Gneiss
Igneous or Metamorphic
Schist
Mica Schist
metamorphic
Mica Schist
Mica Schist (predominantly Muscovite KAl2(AlSi3O10)(OH)2 and Quartz SiO2)
metamorphic
Schist (specifically Mica Schist)
Mica Schist
metamorphic
Garnet-Bearing Schist
Almandine Garnet Micaceous Schist
metamorphic
Ruby
Corundum (Al2O3 with chromium impurities)
mineral
Quartz (likely Jasper or Chert variety)
Quartz (SiO₂)
Mineral
Sandstone (likely Graywacke or Lithic Sandstone)
Arenite / Wacke (SiO2 based with lithic fragments)
sedimentary
Mica Schist
Mica Schist (primarily Muscovite and Biotite)
metamorphic
Likely weathered granite or granitic gneiss fragment
Quartz–feldspar–biotite aggregate; possibly foliated granitic gneiss
igneous
Granitic Pegmatite Intrusion in Host Rock
Pegmatite dike in amphibolite or schist
igneous and metamorphic
Granite Gneiss
Gneiss (High-grade metamorphic rock formed from granitic precursor)
metamorphic
Mosasaur Tooth Fossil
Mosasauridae (likely Prognathodon or Plioplatecarpus)
fossil
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
River Cobble (likely Serpentinite or Greenstone)
Serpentinite / Greenschist facies rock
metamorphic
Greenschist
Greenschist (Chlorite-Albite-Epidote Schist)
metamorphic
Gneiss
Gneiss
metamorphic