Citrine
Silicon Dioxide (SiO2)
Category
Browse metamorphic mineral specimens identified by the Rock Identifier community.
Citrine
Silicon Dioxide (SiO2)
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
Green Adventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
River Cobble (Gneiss/Migmatite)
Gneissic Metamorphic Rock (composed mainly of Quartz, Feldspar, and Biotite)
Smoky Quartz
Silicon Dioxide (SiO2)
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Amazonite
KAlSi3O8 (Potassium aluminum silicate - blue-green variety of Microcline)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Blue Quartz
Quartz (Silicon Dioxide) with blue inclusions (SiO2)
Lapis Lazuli
Lapis Lazuli (Primary mineral: Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
Alexandrite
Chrysoberyl (BeAl2O4 with Chromium impurities)
Quartzite
Quartzite (SiO2)
Gneiss
Gneiss
Marble
Recrystallized Calcite (CaCO3)
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
White Marble
Recrystallized Calcite (CaCO3)
Moonstone
Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8)
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Moonstone
Orthoclase Feldspar (KAlSi3O8) with inclusions of Albite
Red Garnet (Pyrope or Almandine)
Garnet Group (A3B2(SiO4)3)
Garnet (Pyrope-Almandine series)
Garnet Group, (Mg,Fe)3Al2Si3O12
Green Aventurine
Aventurine Quartz (SiO2)
Mica Schist
Schist (muscovite-biotite schist)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Gneiss
Gneiss (High-grade metamorphic rock)
Arsenopyrite in Sulphide Ore
Arsenopyrite (FeAsS)
Pyrite
Iron Sulfide (FeS2)
Rough Blue Sapphire
Corundum (Al2O3)
Schist
Mica Schist
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
Gneiss
Gneiss (High-grade metamorphic rock)
Glaucophane Schist (Blueschist)
Blueschist facies metamorphic rock
Pink Gneiss / Pink Granite Gneiss
Felsic Gneiss (dominated by Orthoclase Feldspar and Quartz)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Mica Schist
Mica Schist (primarily composed of Muscovite/Biotite)
Blue Kyanite
Kyanite (Al2SiO5)
Quartz
Silicon Dioxide (SiO2)
Granite Gneiss
Gneiss (derived from granitic protolith)
Milky Quartz
Silicon Dioxide (SiO2)