Gneiss
Gneiss
metamorphic
Category
Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks
Browse mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks specimens identified by the Rock Identifier community.
Learn about Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks in the encyclopedia
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Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Calcite
Calcite (CaCO₃, Calcium Carbonate)
Mineral
Citrine
Silicon dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Tumbled pale quartz (possibly milky quartz or calcite)
Quartz, SiO₂; visual identification is uncertain because the specimen is poorly lit and polished
mineral
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)
Mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Almandine Garnet
Fe3Al2(SiO4)3
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Sapphire
Corundum (Al2O3)
gemstone
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Gneiss
Metamorphic Gneiss
metamorphic
Chalcedony (Agate/Chert)
Silicon Dioxide (SiO₂)
mineral
Gneiss
Gneissic Metamorphic Rock
metamorphic
Amethyst and Calcite collection
Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Amphibolite / Hornblende Schist
Amphibolite
metamorphic
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Epidote (Unakite component) / Green Quartzite
Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Quartz (Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Hematite
Iron Oxide (Fe2O3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Pyrite in Quartz Matrix
Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Corundum (Sapphire and Ruby)
Aluminum Oxide (Al2O3)
mineral
Hematite
Hematite (Fe2O3)
mineral
Green Aventurine (or Jadeite/Nephrite Jade)
SiO2 (Silicon Dioxide) - Aventurine Quartz
gemstone
Tumbled quartz (likely milky or rose quartz)
Quartz, silicon dioxide (SiO₂)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral