Gneiss
Gneiss
Category
Browse metamorphic or sedimentary specimens identified by the Rock Identifier community.
Gneiss
Gneiss
Gneissic River Pebble
Gneiss
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Quartzite with inclusions
Quartzite (SiO2)
Orange Quartzite (Tumbled)
Quartzite (SiO2)
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with Crocidolite or Magnesio-riebeckite inclusions
Anthracite Coal
Anthracite (Carbon based fossil fuel)
Schist (Micaceous Schist)
Schist (containing mainly Muscovite and Quartz)
Gneiss
High-grade regional metamorphic Gneiss
Gneiss
Gneiss (High-grade Metamorphic Rock)
Muscovite Schist
Muscovite Mica Schist (KAl2(AlSi3O10)(OH)2)
White Marble (Industrial/Architectural)
Recrystallized Calcite (CaCO3)
Iron-Stained Quartzite
Recrystallized Meta-Quartzite (primarily SiO2)
Greenstone / Diabase Porphyry
Porphyritic Diabase (Micro-gabbro)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Jasper
Jasper (Silicon Dioxide, SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Orange Moss Agate / Carnelian Agate
Silicon dioxide (SiO2) - variety Chalcedony
Sandstone (Micaceous Sandstone)
Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Gneiss (specifically Pink Gneiss)
Gneiss (high-grade regional metamorphic rock)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Gneiss
Gneiss
Gneiss
Gneiss
Mica Schist
Mica Schist (primarily Muscovite and/or Biotite composition)
Gneiss
Gneiss
Gneiss
Gneiss
Mica Schist
Mica Schist
Banded Slate (Lithified Mudstone)
Low-grade Metamorphosed Mudstone / Slate
Banded Gneiss
Gneiss
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)
Gneiss (complex silicate composition)
Garnet-Bearing Gneiss
Almandine-Garnet Gneiss
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Garnet-bearing Schist
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
Marble
Recrystallized Calcite Rock (CaCO3)
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)