Kyanite
Kyanite (Al2SiO5)
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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Schist
Mica Schist (primarily consisting of muscovite, biotite, and quartz)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Weathered banded gneiss (probable)
Gneiss; quartz–feldspar–mica metamorphic rock
metamorphic
Quartzite Pebble
Quartzite (SiO2 based)
metamorphic
Red garnet crystal cluster
Most likely almandine garnet, Fe₃Al₂(SiO₄)₃; exact species cannot be confirmed from the image alone.
mineral
Gneiss
Gneiss (High-grade Regional Metamorphism)
metamorphic
Schist (Micaceous)
Mica Schist (predominantly Muscovite or Biotite)
metamorphic
Gneiss
Gneiss
metamorphic
Schist
Crystalline Schist (often containing Muscovite, Biotte, or Quartz)
metamorphic
Likely banded metamorphic rock, possibly schist or gneiss
Micaceous schist/gneiss; identification is limited from the photograph
metamorphic
Banded Gneiss
Gneiss
metamorphic
Rough Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Gneissic Schist
Gneiss-schist (Metamorphic rock)
metamorphic
Garnet
Garnet (X3Y2(SiO4)3)
mineral
Vein-bearing metamorphic rock, likely gneiss or schist
Banded silicate rock; likely quartz–feldspar–mica gneiss with a quartz vein
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Biotite-rich schist
Mica schist; predominantly biotite mica with quartz and feldspar
metamorphic
Gneiss (Metamorphic Rock)
Gneiss
metamorphic
Weathered gray metamorphic rock, likely schist or gneiss
Micaceous quartz-feldspar schist/gneiss; exact identification requires a fresh surface and testing
metamorphic
Banded gneiss (probable)
Gneiss, commonly quartz–feldspar–mica bearing
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Kyanite
Kyanite (Al2SiO5)
mineral
Likely foliated metamorphic rock (gneiss or schist)
Quartz–feldspar–mica metamorphic rock; exact identification requires a fresh surface or tests
metamorphic
Gneiss
Gneiss
metamorphic
Weathered metamorphic rock, likely quartz-mica schist
Quartz–mica schist; composition typically quartz + muscovite/biotite ± feldspar
metamorphic
Gneiss
Gneiss
metamorphic
Granite Gneiss
Granitoid Gneiss
metamorphic
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Schist
Mica Schist (Metamorphic Rock)
metamorphic
Pink-and-black gneiss
Foliated granitic gneiss, commonly quartz–feldspar–biotite gneiss
metamorphic
Mixed rock fragments, likely granite and weathered metamorphic rock
Granite (quartz–feldspar–mica aggregate) with probable schist/gneiss fragments
igneous and metamorphic
Micaceous schist
Mica schist, commonly muscovite–biotite–quartz schist
metamorphic
Dumortierite Quartz
Aluminum Borate Silicate Oxide (Al7BO3(SiO4)3O3)
mineral
Fuchsite
Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Mineral
Quartz–feldspar mica-bearing metamorphic rock, likely gneiss or schist
Micaceous quartzofeldspathic gneiss/schist; chiefly quartz (SiO₂), feldspar, and biotite/muscovite mica
metamorphic
Weathered biotite-rich schist (probable mica schist)
Mica schist, chiefly quartz + biotite mica; possible graphite or iron-oxide staining
metamorphic
Mica-rich schist
Muscovite–biotite schist, commonly quartz-bearing
metamorphic
Likely graphite-rich schist (graphitic schist)
Graphitic schist; chiefly quartz, mica, and graphite (carbon), with possible pyrite or feldspar
metamorphic
Likely biotite-rich mica schist
Mica schist, chiefly biotite (K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂); exact identification from image is uncertain
metamorphic
Likely raw garnet crystal
Garnet-group silicate, probably almandine (Fe₃Al₂Si₃O₁₂)
mineral
Mica-rich metamorphic rock, likely schist
Muscovite/biotite schist, possibly quartz-bearing
metamorphic