Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
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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Biotite Schist (likely)
Biotite Schist (rock), Biotite (mineral)
Metamorphic
Banded gneiss (likely amphibolite-bearing gneiss)
Gneiss; quartz–feldspar–mica/amphibole aggregate
metamorphic
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Fuchsite
Cr-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Sapphire (Rough)
Corundum (Al2O3)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Schist (Garnet-Mica Schist)
Garnet-Mica Schist (X-Y)3Z2(SiO4)3
metamorphic
White Sapphire
Corundum (Al2O3)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Quartzite river stone
Quartzite (SiO2)
metamorphic
Almandine Garnet
Iron aluminum silicate - Fe3Al2(SiO4)3
metamorphic
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
metamorphic
Almandine Garnet
Almandine (Fe3Al2Si3O12)
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
metamorphic
Mica Schist (Garnetiferous)
Garnet-Mica Schist
metamorphic
Gneiss with Quartz Vein
Gneiss (containing SiO2 vein)
metamorphic
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
metamorphic
Greenschist
Chlorite schist
metamorphic
Rough Ruby
Corundum (Al2O3) with Chromium traces
mineral
Mica Schist
Mica Schist
metamorphic
Rough Sapphire (Corundum)
Corundum (Al2O3)
mineral
Blue Dumortierite Quartz
Dumortierite in Quartz (AlAl6BSi3O18)
metamorphic
Almandine Garnet
Almandine (Fe3Al2Si3O12)
mineral
Polished river pebble, likely granite or granitic gneiss
Quartz–feldspar–mica aggregate; possibly biotite granite (compositionally near granite)
igneous
Gneiss (Metamorphosed Pebble)
Gneiss with Quartz/Feldspar banding
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Rough Star Sapphire (Corundum)
Al2O3 (Aluminum Oxide)
mineral
Mica schist, likely biotite–muscovite schist
Mica schist; predominantly quartz, feldspar, biotite and/or muscovite mica. Exact mineral composition cannot be confirmed from the photograph alone.
metamorphic
Red Garnet
Almandine and Pyrope (Silicate minerals: Fe3Al2(SiO4)3 and Mg3Al2(SiO4)3)
mineral
Schist
Mica Schist
metamorphic
Gneiss
Gneissic Metamorphic Rock
metamorphic
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Black Tourmaline
Schorl (NaFe2+3Al6(BO3)3Si6O18(OH)4)
mineral
Mica-rich metamorphic rock, likely schist
Muscovite–biotite schist, possibly with quartz and feldspar
metamorphic
Unknown Tumbled Stone
Unknown (Too Blurry)
mineral
Greenschist
Chlorite Schist
metamorphic
White Quartz
Quartz (SiO2)
Mineral
Staurolite (Fairy Cross)
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Staurolite (Fairy Stone)
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Schist
Mica Schist
metamorphic
Schist (Micaceous Schist)
Schist (comprising Muscovite/Biotite mica, Quartz, and Feldspar)
metamorphic