Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Category
Igneous And Metamorphic
Browse igneous and metamorphic specimens identified by the Rock Identifier community.
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Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
mineral
Labradorite
(Ca,Na)(Al,Si)4O8
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Almandine Garnet & Tumbled Citrine Quartz
Fe3Al2(SiO4)3 (Garnet) and SiO2 (Quartz)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Ruby
Corundum (Al2O3)
mineral
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Smoky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Aventurine
Quartz (SiO2) with inclusions of Fuchsite
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Sapphire (Blue)
Corundum (Al2O3)
mineral
Orthoclase Feldspar (Twinning Specimen)
Orthoclase (KAlSi3O8)
mineral
Corundum (variety Ruby/Sapphire)
Aluminum Oxide (Al2O3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Aventurine
Quartz with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Quartz (Milk/Citrine variety)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Blue Calcite
Calcite (CaCO3)
mineral
Clear Quartz Crystal
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Amethyst and Ruby in Zoisite
Silicon Dioxide (SiO2) and Anyolite (Zoisite-Hornblende-Ruby mix)
mineral and metamorphic rock
Gold-Bearing Quartz Ore
Crystalline Silicon Dioxide (SiO2) with Trace Aurum (Au)
mineral
Peacock Ore (Chalcopyrite)
Chalcopyrite (CuFeS2)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Felsic Drill Core (likely Gneiss or Granite)
Felsic Metamorphic Rock (Gneissic profile)
metamorphic
Granitic Gneiss
Gneiss (Metamorphic rock of granitic composition)
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Greenschist / Chloritaform Schist
Chlorite Schist (Group of Silicate Minerals)
metamorphic
Massive Quartz with Host Rock
Silicon Dioxide (SiO2)
mineral