Epidote
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
mineral
Category
Metamorphic Rock
Browse metamorphic rock specimens identified by the Rock Identifier community.
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sodalite
Sodalite Na8(Al6Si6O24)Cl2
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Quartzite/Graphite Matrix
Iron Sulfide (FeS2)
Mineral
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Jade (Jadeite or Nephrite)
Jadeite (NaAlSi2O6) or Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
Beryl (likely Emerald or Aquamarine in matrix)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Tourmaline (Multi-colored)
Complex Borosilicate (Na,Ca)(Li,Mg,Al,Fe)3Al6(BO3)3Si6O18(OH)4
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Black Sand (Magnetite Sand)
Magnetite (Fe3O4)
mineral
Schorl (Black Tourmaline) in Matrix
Sodium Iron Aluminum Borosilicate Hydroxide (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
mineral
Jadeite (Jade)
Jadeite (NaAlSi2O6)
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcopyrite in Matrix
Chalcopyrite (CuFeS2)
mineral
Geode (Unopened)
Siliceous Concretion / Geode
sedimentary
Greenschist
Greenschist (composed of Chlorite, Actinolite, and Epidote)
metamorphic
Blue Quartzite
Quartzite (silicon dioxide, SiO2)
metamorphic
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
metamorphic
Greenschist
Chlorite schist
metamorphic
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Jadeite (Jade)
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Mica Schist (Garnetiferous)
Garnet-Mica Schist
metamorphic
Green Schist
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
metamorphic
Granite Cobble
Granite (Phaneritic Igneous Rock)
igneous
Fuchsite Schist
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Schist
metamorphic