Granitic Gneiss
Gneiss (High-grade metamorphic rock)
Category
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
Granitic Gneiss
Gneiss (High-grade metamorphic rock)
Quartz Vein Rock
Silicon Dioxide (SiO2)
Gneiss (Metamorphic Rock)
Gneiss
Dragon Blood Jasper
SiO2
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Serpentine
Antigorite/Lizardite/Chrysotile group, Mg3Si2O5(OH)4
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Quartz
Silicon Dioxide (SiO2)
Mixed Rock and Mineral Collection
Mixed Assemblage (includes Quartz, Jasper, Feldspar, and Turquoise-colored stones)
Pyrite
Iron Disulfide (FeS2)
Milky Quartz (Tumbled)
Silicon Dioxide (SiO2)
Magnetite
Magnetite (Fe3O4)
Milky Quartz
Silicon Dioxide (SiO2)
Schist
Mica Schist (Metamorphic Rock)
Schist
Schist (Crystalline metamorphic rock)
Biotite Mica in Host Rock
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
Glaucophane / Blue Schist
Glaucophane (Na2(Mg3Al2)Si8O22(OH)2)
Gneiss
Gneiss (High-grade metamorphic rock)
Greenschist
Greenschist facies metamorphic rock
Schist
N/A (a rock type, not a mineral formula)
Marble
Recrystallized Calcite (CaCO3) Rock
Gneiss (River Cobble)
Gneiss (Foliated Metamorphic Rock)
Greenschist (Greenstone)
Chlorite Schist / Greenschist Facies Rock
Quartz
Silicon Dioxide (SiO2)
Faceted Clear Quartz
Crystalline Silicon Dioxide (SiO2)
Marble
Recrystallized Carbonate Rock (CaCO3)
Garnet Schist
Almandine Garnet-Mica Schist (X₃Y₂(SiO₄)₃)
Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)
Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Mica Schist with Quartz
Muscovite/Biotite Schist
Quartzite
Quartzite (SiO2)
Schist
Crystalline Metamorphic Rock (Schistose)
Lapis Lazuli (Tumbled Stone)
Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (Lazulite-rich Metamorphic Rock)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Gneiss Pebble
Gneiss (Metamorphic Foliated Rock)
Garnet Schist
Almandine-Garnet Schist
Quartz
Silicon Dioxide (SiO2)
Garnet in Matrix (likely Almandine in Quartz/Mica Schist)
Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock
Milky Quartz (with Iron Staining)
Silicon Dioxide (SiO2)
Quartz with Sulfide Inclusions
Silicon Dioxide (SiO2) with metallic mineral inclusions