Schist
Mica Schist
Category
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
Schist
Mica Schist
Shale or Argillite
Shale (sedimentary) / Argillite (metamorphic)
Gneiss
Gneiss (High-grade metamorphic rock)
Schist with Quartz/Mica
Mica Schist (primarily Muscovite and Quartz)
Gold Ore in Quartz/Schist
Auriferous Quartz and Sulfide-bearing Schist
Ruby in Fuchsite
Corundum (Al2O3) in Fuchsite (K(Al,Cr)3Si3O10(OH)2)
Quartz (on matrix)
Quartz (Silicon Dioxide, SiO₂)
Gneiss (Banded Gneiss)
Gneiss
Clear Quartz
Silicon Dioxide (SiO2)
Gneiss (likely)
Gneiss
Pyrite
Iron Sulfide (FeS2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Green Aventurine (Green Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
Gneiss (specifically Pink Gneiss)
Gneiss (high-grade regional metamorphic rock)
Clear Quartz
Silicon Dioxide (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Pink Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within a metamorphic matrix
Fuchsite
Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)
Schist
Mica Schist
Quartz (Milky Quartz)
Silicon Dioxide (SiO₂)
Milky Quartz (Druzy Geode fragment)
Silicon Dioxide (SiO2)
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
Iron-Stained Quartzite
Recrystallized Meta-Quartzite (primarily SiO2)
Garnet Schist
Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)
Granitic Gneiss
Gneiss (High-grade Metamorphic Rock)
Marble (Carrara style)
Recrystallized Calcite-rich Metamorphic Rock (CaCO3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)
Gneiss
Gneiss (High-grade metamorphic rock composed primarily of Quartz, Feldspar, and various Micas)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Greenstone (Epidote/Chlorite-rich Metabasalt)
Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))
Nuummite
Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)
Quartz / Calcite Vein Rock
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)
Blue Sapphire
Corundum (Al2O3 - Aluminum Oxide)
Schist
Schist (various mineralogical compositions including mica, chlorite, talc, etc.)