Milky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral with metamorphic or igneous host specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
Quartz-veined Metamorphic Rock
Quartz Vein in Phyllite or Schist (SiO2 in Silicate Matrix)
Milky quartz
Quartz (silicon dioxide, SiO₂)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Blue Sapphire
Corundum (Al2O3)
Green Druzy Quartz (Prasiolite)
Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)
Quartz with Mafic/Chlorite Veins
Silicon Dioxide (SiO2) with Chlorite/Epidote cross-veining
Tumbled honey quartz (likely iron-stained quartz)
Quartz, silicon dioxide (SiO₂), with limonite/goethite inclusions or surface staining
Rough Dark Green Sapphire
Corundum (Al2O3)
Milky Quartz
Quartz (Silica / Silicon Dioxide), SiO2
Clear Quartz Cluster
Crystalline Silicon Dioxide (SiO2)
Greenstone
Metabasalt / Chlorite schist
Emerald
Beryl (Be3Al2(SiO3)6)
Orange Calcite
Calcite (CaCO3)
Quartz Vein in Matrix (Breccia / Host Rock with Quartz)
Silicon Dioxide (SiO2) in Host Rock Matrix
Raw Emerald (Emerald Beryl)
Beryl (Be3Al2Si6O18) with chromium/vanadium impurities
Quartz Matrix with Iron Staining / Mica Schist
Silicon Dioxide (SiO2) with Iron Oxide staining
Emerald
Beryl (Be3Al2(SiO3)6)
Fluorite with Quartz coating
Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
Green Tourmaline (Verdelite)
Tourmaline Group; often Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) or Dravite (NaMg3Al6(BO3)3Si6O18(OH)4)
Quartz-veined Metamorphic Pebble
Silicate-rich metamorphic rock with quartz veins (SiO2)
Aventurine
Quartz (Aventurine variety)
Fossil gastropod in granite-like stone
Gastropoda indet.; enclosing rock likely polished granite or gneiss
Quartz with Mica/Schist inclusion
Silicon Dioxide (SiO2) with Phyllosilicates
Pegmatite
Igneous Pegmatite
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Yellow Sapphire
Corundum (Al2O3)
Almandine Garnet
Iron aluminum silicate (Fe3Al2(SiO4)3)
Gold Nugget
Native Gold (Au)
Yellow Sapphire
Corundum (Al2O3:Fe)
Green Quartz / Prasiolite
Silicon Dioxide (SiO2)
Rock Fragment with Calcite/Quartz Vein
Polymictic Rock Fragment (SiO2 / CaCO3)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Green Aventurine (or Xiuyan Jade / Serpentine)
Silicon Dioxide (SiO2) with Fuchsite inclusions or Magnesium Silicate
Epidote with Quartz/Feldspar
Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) with associated minerals in a host rock
Pink Feldspar / Rhodochrosite (Tumbled Pink Quartzite)
SiO2 (Quartz) / KAlSi3O8 (Potassium Feldspar)
Pegmatite
Igneous Pegmatite
Pegmatite
Igneous Pegmatite
Quartzite with Epidote/Chlorite Inclusion
Metamorphic Quartzite (SiO2 with accessory silicate minerals)
Pyrite in Matrix
Iron Sulfide (FeS2)
Greenschist (containing Epidote and Quartz)
Greenschist (Epidote-Chlorite-Actinolite Schist)
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions