Gneiss
Gneiss
metamorphic
Category
Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)
Browse metamorphic rock (for nephrite and some jadeite); mineral (for jadeite) specimens identified by the Rock Identifier community.
Banded Gneiss (River Cobble)
Gneiss (High-grade regional metamorphic rock)
metamorphic
Fuchsite
Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Granitic Gneiss
Gneiss (Polymetamorphic Granitic Gneiss)
metamorphic
Serpentine
Antigorite/Lizardite (Mg,Fe)3Si2O5(OH)4
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Garnet
Garnet Group (complex nesosilicates with general formula X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+, V3+)
Mineral
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Black Star Diopside
Diopside (CaMgSi2O6) with asterism
Mineral
Biotite Mica
K(Mg,Fe)3AlSi3O10(OH)2
Mineral in a matrix (likely quartz or feldspar)
Banded Gneiss
Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Biotite/Amphiboles)
metamorphic
Banded Gneiss
Gneiss (quartz-feldspar-biotite metamorphic rock)
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Serpentine
Serpentine-group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)
metamorphic
Quartz
Quartz (SiO₂)
Mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)
metamorphic
Banded Gneiss
Gneiss (Metamorphic high-grade rock)
metamorphic
Serpentine
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Quartzite (River Stone)
Quartzite (SiO2)
metamorphic
Petrified Wood (Silicified Wood)
Silicified Wood / Silicon Dioxide (SiO2)
metamorphic
Banded Gneiss
Gneiss (typically quartz, feldspar, mica, amphibole composition)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Serpentinite (Serpentine Rock)
Primarily composed of serpentine group minerals, such as antigorite, chrysotile, and lizardite. Chemical formula for serpentine minerals is (Mg,Fe)3Si2O5(OH)4.
Metamorphic
Gneiss
High-grade regional metamorphic rock (Foliated)
metamorphic
Biotite Mica
K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2
Mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Mineral
Graphite Schist
C (Carbonaceous Schist)
metamorphic
Mica Schist
Mica Schist (Complex Silicate Rock)
metamorphic
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Gneiss (specifically a Granitic Gneiss)
Gneiss (Composition: Quartz, Feldspar, Mica)
metamorphic
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Unakite
Unakite (Metasomatized Granite)
metamorphic
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Slate
Slate (Metamorphic Rock)
metamorphic
Bronzite
MgSiO3 (Enstatite with 10-30% FeSiO3 in solid solution)
Mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Ferruginous Quartz on Ironstone
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
metamorphic
Schist
N/A (a rock type, not a mineral formula)
metamorphic