Schist
Mica Schist
Category
Browse metamorphic or sedimentary depending on local grade specimens identified by the Rock Identifier community.
Schist
Mica Schist
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
Black Star Diopside
Diopside (CaMgSi2O6) with asterism
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
Quartz
Silicon dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Garnet Schist
Almandine-mica schist
Gneiss
Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)
Gneiss
Gneiss
Slate
Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)
Gneiss
Gneiss (High-grade metamorphic rock)
Black Kyanite
Kyanite (Al2SiO5) with carbonaceous inclusions
Gneiss
Gneiss
Biotite Schist
Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)
Gneiss
Gneiss (Metamorphic high-grade)
Gneiss
Gneiss
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
Muscovite Schist
Mica Schist (primarily KAl2(AlSi3O10)(OH)2)
Gneiss (Banded Gneiss)
Gneiss
Blue Kyanite
Kyanite (Al2SiO5)
Schist
Schist (metamorphic rock)
Stichtite in Serpentine (Atlantisite)
Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)
Emerald
Beryl (Be₃Al₂(SiO₃)‑₆) with Chromium/Vanadium impurities
Gneiss
Gneiss (High-grade metamorphic rock)
Mica Schist
Mica Schist (Composition: Muscovite, Biotite, Quartz, Feldspar)
Phyllite
Phyllite (Foliated metamorphic rock)
Ferruginous Breccia
Breccia with Iron-rich (Hematite/Goethite) Matrix
Blue Kyanite
Kyanite (Al2SiO5)
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Gneiss
High-grade Metamorphic Gneiss
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
Gneiss
Gneiss (High-grade metamorphic rock)
Gneiss
Gneiss (High-grade metamorphic rock)
Granite Gneiss
Gneiss (High-grade metamorphic rock)
Chert (within Limestone)
Silicon Dioxide (SiO2) in Calcium Carbonate (CaCO3) matrix
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
Mookaite Jasper
Radiolarite (Silicon Dioxide, SiO2)
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)