Gneiss
Gneiss
metamorphic
Category
Mineral And Metamorphic Rock
Browse mineral and metamorphic rock specimens identified by the Rock Identifier community.
Learn about Mineral And Metamorphic Rock in the encyclopedia
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Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Green Mica Schist
Mica Schist (Fuchsite or Chlorite variety)
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gold Ore in Quartz/Schist
Auriferous Quartz and Sulfide-bearing Schist
Metamorphic/Igneous (Hydrothermal)
Clear Quartz Sphere
Quartz (Silicon Dioxide, SiO2)
mineral
Mica Schist
Mica Schist (predominantly Muscovite or Biotite series)
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gneiss (Cobble)
Gneiss
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Quartzite
Metamorphic Quartz Rock
metamorphic
Slate
Metamorphic Pelitic Rock
metamorphic
Quartzite River Rock
Metamorphic Rock (Quartzite)
metamorphic
Slate
Slate (Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (complex metamorphic silicate rock)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock (often Granite or Schist)
Silicon Dioxide (SiO2) within host matrix
mineral with metamorphic or igneous host
Quartz in Matrix (or Quartz Vein Rock)
Silicon Dioxide (SiO2) with host rock
igneous
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Speckled rounded stone, likely granite or granitic gneiss
Granite/granitic gneiss; primarily quartz (SiO₂), feldspar, and dark mica or amphibole
igneous
Limonite (Iron Ore)
Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)
metamorphic
Gneiss (specifically a Banded Gneiss pebble)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss (specifically a granitic gneiss cobble)
Gneiss (high-grade regional metamorphic rock)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Eclogite
Eclogite (Omphacite-Garnet rock)
metamorphic
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Greenstone (Epidote/Chlorite-rich Metabasalt)
Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Banded gneiss pebble
Foliated gneiss, typically quartz–feldspar–mica bearing
metamorphic
Ruby (varieties of Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Pyritic Gneiss
Metamorphic Gneiss with Pyrite inclusions
metamorphic
Schist
Mica Schist
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneissic River Pebble
Gneiss
metamorphic
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
metamorphic
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral