Schist
Mica Schist
Category
Browse mineral with metamorphic or sedimentary host specimens identified by the Rock Identifier community.
Schist
Mica Schist
Talc
Talc (Mg₃Si₄O₁₀(OH)₂)
Fuchsite
Cr-bearing Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Weathered Quartzite or Chert Pebble
Silicon Dioxide (SiO2)
Granitic Gneiss
Gneiss (High-grade metamorphic rock)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Green Quartz / Aventurine
Silicon Dioxide (SiO2) with inclusions
Quartz
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Tiger's Eye (dark/grey variant)
Pseudomorph of Quartz after Crocidolite (SiO2)
Moonstone (Feldspar)
Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)
Tiger's Eye
Silicon Dioxide (SiO2)
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
Arkosic Sandstone (or Conglomeritic Sandstone fragment)
Arkose (rich in feldspar)
Schist
Mica Schist
Greenschist (Chlorite Schist)
Greenschist (Metamorphic rock dominated by chlorite, actinolite, and epidote)
Dragon Blood Jasper
SiO2
Gemstones (Emerald and Yellow Topaz or Citrine)
Beryl (Be3Al2Si6O18) and Quartz (SiO2) or Topaz (Al2SiO4(F,OH)2)
Garnet (likely Almandine, Pyrope, or a blend)
Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)
Quartzite
Quartzite (primarily SiO2)
Quartzite (Rounded Pebble)
Quartzite (predominantly SiO2)
Green Aventurine
Silicon Dioxide (SiO2+KAl2(AlSi3O10)(OH)2)
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
Amphibolite with Hornblende
Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)
River Pebble (likely Quartzite or Chert)
Silicon Dioxide (SiO2) crystal conglomerate
Mica Schist with Garnet
Garnet-Mica Schist
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
Beryl (Aquamarine) in Matrix with Schorl
Be3Al2Si6O18 (Beryl) with NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)
Garnet
Garnet Group (Silicate Minerals)
Arfvedsonite in Quartz
Arfvedsonite [Na3(Fe2+4Fe3+)Si8O22(OH)2] often hosted in Quartz or Feldspar
Jadeite Jade
Jadeite (NaAlSi2O6)
Corundum (variety Ruby/Sapphire)
Aluminum Oxide (Al2O3)
Quartz (Milky and Smoky variety)
Silicon Dioxide (SiO2)
River Pebbles (Sandstone and Quartzite)
SiO2 (Quartz) dominated clastic rocks
Milky Quartz
Silicon Dioxide (SiO2)
Marble
Recrystallized Calcite (CaCO3)
Marble
Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.
Quartz (Rutilated)
Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Green Aventurine
Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions