Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Category
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
Almandine Garnet in Matrix
Almandine (Fe3Al2(SiO4)3)
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Ferruginous Quartz (Iron-stained Quartzite)
Silicon Dioxide (SiO2) with iron oxide inclusions
Greenstone / Graywacke
Metagraywacke (Chlorite-grade schistose rock)
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Granite Gneiss
High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)
Titanium Coated Kyanite (Aura Kyanite)
Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating
Gneiss (Granitic Gneiss)
Gneiss (from German Gneis, related to 'spark')
Mica Schist (with Golden/Biotite inclusions)
K(Mg,Fe)3AlSi3O10(F,OH)2 (Biotite), KAl2(AlSi3O10)(F,OH)2 (Muscovite)
Quartzite
Quartzite (primarily SiO2)
Quartzite River Rock (with Limonite staining)
Quartzite (SiO2)
Banded Agate
Agate (Silicon Dioxide, SiO2)
Dyed Agate
Silicon Dioxide with artificial pigment (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)
Nephrite Jade
Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Quartzite
Quartzite (primarily SiO2)
Gneiss (Schistose)
Gneiss
Gneiss
Gneiss
Gneiss (Metamorphic Cobble)
Gneiss
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
Quartzite (Rounded Pebble)
Quartzite (predominantly SiO2)
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Gneiss
Gneiss (High-grade metamorphic rock)
Gneiss
Gneiss
Gneiss (specifically Pink Gneiss)
Gneiss (high-grade regional metamorphic rock)
Mica Schist
Mica Schist (predominantly Muscovite/Biotite)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Banded Gneiss
Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Biotite/Amphiboles)
Gneiss (specifically a Granitic Gneiss)
Gneiss (Composition: Quartz, Feldspar, Mica)
Pebble (likely Quartzite or Chert)
Clastic Sediment, potentially composed of SiO₂ (Quartz)
Grey Slate
Foliated Metamorphic Rock (formed by low-grade regional metamorphism of shale or mudstone)
Arkosic Sandstone (or Conglomeritic Sandstone fragment)
Arkose (rich in feldspar)
Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Coarse Sand Grain / Lithic Fragment
Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)