Black Tourmaline
Schorl (NaFe3Al6(Si6O18)(BO3)3(OH,F)4)
mineral
Category
Metamorphic (Likely Gneiss Or Schist Based On Texture)
Browse metamorphic (likely gneiss or schist based on texture) specimens identified by the Rock Identifier community.
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Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Gneiss
Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Possible weathered granite or gneiss
Feldspar–quartz–mica rock; exact identification is uncertain from the photograph
igneous
Weathered schist or phyllite
Mica schist/phyllite, likely quartz–mica-rich metamorphic rock
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)
Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)
Metamorphic
Garnet
Garnet group (X3Y2(SiO4)3)
mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Blue Kyanite
Kyanite (Al2SiO5)
metamorphic
Red Garnet (likely Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Mica Schist
Mica Schist (contains Muscovite/Biotite, Quartz)
metamorphic
Mica Schist
Mica Schist (primarily Muscovite or Biotite)
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Garnet (likely Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Garnet and Quartz
Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)
mineral
Corundum
Corundum (Aluminium oxide, Al2O3)
mineral
Almandine Garnet
Fe3Al2(SiO4)3
gemstone
Tourmaline
Schorl (Complex boron silicate, NaFe3Al6(Si6O18)(BO3)3(OH)4)
mineral
Mica-rich metamorphic rock, likely schist
Muscovite–biotite schist; principally muscovite mica, biotite, quartz, and feldspar
metamorphic
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Banded gneiss pebble
Gneiss, commonly quartz–feldspar–mica gneiss
metamorphic
Corundum (Sapphire/Ruby in Matrix)
Aluminium oxide (Al2O3)
mineral
Gneiss
Gneiss (SiO2-rich metamorphic rock)
metamorphic
Gneiss
High-grade regional metamorphic rock (Foliated)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Garnet amphibolite / Metamorphic Rock
Garnet Amphibolite (Hornblende - Almandine schist/gneiss)
metamorphic
Schist
Mica schist, likely muscovite–biotite schist with quartz and feldspar
metamorphic
Garnet
Group of silicate minerals (e.g., Almandine: Fe3Al2(SiO4)3)
gemstone
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
gemstone
Biotite (Mica)
Biotite group (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Red Garnet
Garnet Group (e.g., Pyrope, Almandine, Spessartine, Grossular, Andradite, Uvarovite)
Mineral
Garnet (Almandine)
Almandine, Fe3Al2Si3O12
mineral
Ruby / Red Corundum
Al2O3 (Aluminum Oxide with Chromium trace)
gemstone
Sapphire
Corundum (Al2O3)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic