Iron-stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Limonite/Goethite) inclusions
Category
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
Iron-stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Limonite/Goethite) inclusions
Quartz (Milky or Yellowish)
Silicon Dioxide (SiO2)
Black Onyx
Silicon Dioxide (SiO2)
Opalite
Synthetic Glass (SiO2 + impurities)
Quartz (Milky/Common variety)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Opalite
Synthetic Glass (typically Silica/Magnesium based with metal additives)
Quartz
SiO2 (Silicon Dioxide)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Blue Lace Agate (Variety of Chalcedony)
Silicon Dioxide (SiO2)
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
Variscite (or potentially a turquoise/variscite matrix cabochon, or an impression jasper)
AlPO4·2H2O (Variscite) or related phosphate/silicate material depending on exact composition
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
Amazonite
Microcline (K(AlSi3O8))
Quartz with Oxides
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz with Dendritic Inclusions
Silicon Dioxide (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
Gypsum (Satin Spar/Desert Rose variety)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
Chrysocolla (on host rock)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Copper silicate)
Satin Spar (Gypsum)
Hydrous calcium sulfate (CaSO4·2H2O)
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Pink Dyed Agate
Silicon Dioxide (SiO2) - Variety Agate
Chalcedony on Matrix
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (specifically Milky/White Quartz)
Silicon Dioxide (SiO2)
Quartz (Rosy/Clear variety)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Aquamarine
Aquamarine (Beryl variety); Be3Al2Si6O18
Banded Agate (Silk Agate or Maligano Jasper variant)
Silicon Dioxide (SiO2)
Selenite / Gypsum
Gypsum (CaSO4·2H2O)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)