Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
Category
Browse mineral with metamorphic or sedimentary host specimens identified by the Rock Identifier community.
Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss (specifically Pink Gneiss)
Gneiss (high-grade regional metamorphic rock)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Granite Gneiss
Gneiss (quartz-feldspar dominated)
Banded Gneiss
Gneiss (High-grade metamorphic rock)
White Marble
Recrystallized Calcite (CaCO3)
Granite Gneiss
Felsic Gneiss
Garnet Schist
Garnetiferous Mica Schist
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Quartz Geode/Druzy Quartz
Quartz (SiO₂)
Almandine Garnet (weathered)
Almandine (Fe3Al2(SiO4)3)
Milky Quartz
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Micaceous Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
Staurolite
Staurolite (Fe2+2Al9Si4O23(OH))
Graphite
Graphite (Chemical Formula: C)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Quartz (Peach/Orange variety)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz (Rock Crystal Fragments)
Silicon Dioxide (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Magnetite / Iron Ore
Magnetite (Fe3O4)
Petrified Wood (Silicified Wood)
Silicified fossil wood (SiO2)
Banded Gneiss
Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica)
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous matrix
Gneiss (High-Grade Metamorphic Rock)
Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)
Gneiss (Granitic Gneiss)
Gneiss (from German Gneis, related to 'spark')
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Fancy Jasper
Chalcedony (cryptocrystalline quartz) with inclusions
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Water and Silt (Sedimentary Environment)
Suspended Sediment / H2O (dihydrogen monoxide)
Quartz Crystal Cluster
Quartz (Silicon Dioxide, SiO2)
Agate with Quartz Druzy
Silicon Dioxide (SiO2) - Microcrystalline and Macrocrystalline varieties
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Orange Calcite
Calcium Carbonate (CaCO3)
Rhodochrosite
Manganese carbonate (MnCO3)