Banded Gneiss
Gneiss (High-grade metamorphic rock)
Category
Browse metamorphic and sedimentary specimens identified by the Rock Identifier community.
Banded Gneiss
Gneiss (High-grade metamorphic rock)
Quartzite with Iron Inclusions
Metamorphosed Quartz Arenite (SiO2)
Pink Marble (Quartzite or Calcite mix)
Metamorphosed Limestone / Quartzite (CaCO3 or SiO2 with iron impurities)
Banded Gneiss (with Quartz Vein)
Gneiss (SiO2 and varied Silicates)
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss (specifically Granitic Gneiss)
Gneiss
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite mica (K(Al,Cr)2(AlSi3O10)(OH)2)
Granite Gneiss River Rock
Gneiss
Marble
Recrystallized Calcite (CaCO3)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Gneiss (Banded Gneiss)
Gneiss
Granitic Gneiss
Felsic Polycrystalline Gneiss
Gneiss
Gneiss
Granite Gneiss
High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)
Dragon Blood Jasper
Epidote with Red Jasper (Quartz-rich aggregate)
Anthracite Coal
Anthracite
Petrified Wood
Silicified Wood (SiO2)
Garnet Schist
Almandine Garnet-Mica Schist (X₃Y₂(SiO₄)₃)
Tiger Iron
Tiger Iron (A complex combination of Hematite Fe2O3, Red Jasper SiO2, and Tiger's Eye SiO2/FeOOH)
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
Gneiss
Gneiss
Quartzite
Quartzite (primarily SiO2)
Gneiss (Banded Gneiss)
Gneiss
Quartz Pebble
Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (primarily SiO2)
Rough Garnet in Matrix
Almandine Garnet (Fe3Al2Si3O12)
Banded Gneiss
Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)
Green Aventurine
Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Green Aventurine
Quartzite (Silicon Dioxide, SiO2 + Fuchsite)
Gneiss
Gneiss
Ferruginous Quartz (Iron-stained Quartzite)
Silicon Dioxide (SiO2) with iron oxide inclusions
Greenstone / Graywacke
Metagraywacke (Chlorite-grade schistose rock)
Titanium Coated Kyanite (Aura Kyanite)
Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating
Gneiss (Granitic Gneiss)
Gneiss (from German Gneis, related to 'spark')
Quartzite
Quartzite (primarily SiO2)
Quartzite River Rock (with Limonite staining)
Quartzite (SiO2)
Greenstone / River Siltstone
Metasedimentary Greenstone (Chlorite-rich Siltstone)
Foliated Gneiss (River-Worn Pebble)
Gneiss (High-grade Regional Metamorphic Rock)
Gneiss
Gneiss (High-grade regional metamorphic rock)