Painted River Rock
Artificially Coated Sedimentary Rock
Category
Browse metamorphic (likely gneiss or schist based on texture) specimens identified by the Rock Identifier community.
Painted River Rock
Artificially Coated Sedimentary Rock
Quartz / Quartzite
Silicon Dioxide (SiO2)
Weathered quartz-rich pebble, likely granite or granitic gneiss
Granite/granitic gneiss; chiefly quartz (SiO₂), feldspar, and minor mica or iron oxides
Weathered granite or granitic gneiss
Quartz–feldspar–mica granitoid; possibly gneiss if the visible layering is tectonic
Fuchsite Schist with Quartz
Chromian Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2] Schist
Mica (Biotite or Phlogopite variety)
Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)
Gneiss
Gneiss (High-grade metamorphic rock)
Gneiss
Gneissic Metamorphic Rock
Granite or granitic pegmatite fragment
Felsic intrusive rock, chiefly quartz, feldspar, and mica
Gneiss (specifically Micaceous Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Quartz with Mica Schist Matrix
Quartz (SiO2) in Mica Schist Matrix
Garnet Schist
Garnetiferous Mica Schist
Muscovite Schist
Muscovite (KAl2(AlSi3O10)(OH)2) in Schist
Gneiss (Metamorphic Rock)
Gneiss
Gneiss
Gneiss (Metamorphic rock)
Banded Gneiss
Gneiss (Metamorphic Rock)
Banded Quartzite or Gneissic Pebble
Quartzite with mafic inclusions (SiO2) or Banded Gneiss
Quartz–feldspar–mica metamorphic rock, likely gneiss
Gneiss; composition commonly quartz (SiO₂), feldspars, biotite/hornblende, and minor accessory minerals
Fuchsite
Chromium-bearing Muscovite - K(Al,Cr)2(AlSi3O10)(OH)2
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Banded Gneiss
Gneiss (Metamorphic Rock)
Gneiss
Gneiss
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
Mica Schist
Muscovite-Biotite Schist
Garnet
Garnet Group (complex nesosilicates with general formula X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+, V3+)
Glaucophane Schist
Glaucophane-bearing Schist (Na2(Mg,Fe)3Al2Si8O22(OH)2)
Gravel Pebble (Likely Quartzite or Basalt)
Quartzite (or Macrocrystalline Quartz)
Fuchsite or Green Mica Schist
K(Al,Cr)2(AlSi3O10)(OH)2
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Emerald / Green Beryl
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Phyllite
Phyllite
Garnet Schist
Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)
Garnet Schist
Almandine-Garnet Mica Schist
Banded Gneiss
Gneiss (Metamorphic silicate rock)
Mica Schist
Mica Schist (Quartz-Mica Metamorphic Rock)
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Granite Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Banded Gneiss
Gneiss (high-grade metamorphic silicate rock)
Mica Schist
Mica Schist (primarily Muscovite or Biotite-rich sequence)
Rough Green Sapphire (Corundum)
Corundum (Al2O3 - Aluminum Oxide with trace elements)
Green Kyanite
Kyanite (Al2SiO5)