Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Category
Browse metamorphic mineral specimens identified by the Rock Identifier community.
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Unakite
Epidotized Granite
Gneiss
Gneiss
Gneiss
Gneiss
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
Quartzite
Quartzite (primarily SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Aquamarine
Beryl (Be3Al2Si6O18 with Fe2+ impurities)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Ruby (Raw Corundum)
Corundum (Al2O3 with Chromium impurities)
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
Gneiss
High-grade metamorphic rock (Gneiss)
Granite Gneiss
Gneiss (High-grade metamorphic rock)
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Quartz
Silicon Dioxide (SiO2)
Amazonite
Potassium aluminum silicate (KAlSi3O8)
Biotite Gneiss
Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2 with iron oxide inclusions)
Quartz vein in Host Rock
Crystalline Silicon Dioxide (SiO2) in Lithic Matrix
Quartzite
Quartzite (primarily SiO2)
Greenstone with Magnetite Veins
Metabasalt (Greenstone)
Quartzite
Quartzite (SiO2)
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Greenschist
Greenschist (Chlorite Schist facies)
Schist
Mica Schist (Medium-grade Metamorphic Rock)
Quartz
Silicon Dioxide (SiO2)
Quartz (Smoky/Granular variety)
Silicon Dioxide (SiO2)
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
Almandine Garnet & Tumbled Citrine Quartz
Fe3Al2(SiO4)3 (Garnet) and SiO2 (Quartz)
Quartz / Quartzite
Quartz (Silicon Dioxide, SiO2)
Sand (Construction Grade)
Unconsolidated siliciclastic sediment (primarily SiO2)
Quartz (Milky/Crystal variety)
Silicon Dioxide (SiO2)
Jadeite (Jade)
NaAlSi2O6 (Sodium Aluminum Silicate)
Smoky Quartz (with inclusions)
Silicon Dioxide (SiO2)
Greenstone
Greenschist
Epidote in Quartz
Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) in Milky Quartz (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Lapis Lazuli
Lapis lazuli (a rock primarily composed of Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Quartzite with inclusions
Metamorphosed Quartz-rich Rock (SiO2)