Quartz pebble
Silicon Dioxide (SiO2)
Category
Browse mineral (evaporite) specimens identified by the Rock Identifier community.
Quartz pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz with inclusions
Silicon Dioxide (SiO2)
Quartz Pebble (Sea Glass-like Quartz)
Quartz (Silicon Dioxide - SiO2)
Quartz (Milky or Smoky Quartz)
Silicon Dioxide (SiO2)
Quartz with Limonite Staining
Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)
Unakite
Unakite (Metasomatized Granite)
Sand Grain (Silica/Quartz Grain)
Silicon Dioxide (SiO2)
Amethyst on Basalt
Silicon dioxide (SiO2) with trace Iron
Smoky Quartz
Silicon Dioxide (SiO2)
Green Moss Agate
Agate (Silicon Dioxide, SiO2) with inclusions
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Azurite and Malachite
Copper Carbonates: Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)
Tanzanite
Blue Zoisite (Ca2Al3(SiO4)3(OH))
Blue Quartz
Quartz (Silicon Dioxide) with inclusions, SiO2
Pink Spinel
Magnesium Aluminum Oxide (MgAl2O4)
Petrified Wood
Silicified Wood (SiO2)
Chondrite Meteorite
Ordinary Chondrite (L or H type)
Citrine Quartz
Silicon Dioxide (SiO2)
Rutilated Quartz
Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions
Amazonite
Microcline (KAlSi3O8)
Tanzanite (Rough)
Blue Zoisite (Ca2Al3(SiO4)3(OH))
Rough Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
Amazonite
Potassium aluminum silicate (KAlSi3O8)
Moonstone with Black Tourmaline
Feldspar (KAlSi3O8) with inclusions of Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Amethyst
Amethyst (SiO2 with Iron impurities)
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite treated with acid
Amethyst (Geode Fragment)
Silicon Dioxide with iron impurities (SiO2)
Malachite and Azurite on Matrix
Cu2CO3(OH)2 (Malachite) / Cu3(CO3)2(OH)2 (Azurite)
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
Peacock Ore
Bornite (Cu5FeS4)
Amethyst
Amethyst (Silicon Dioxide with iron impurities), SiO2
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
Emerald (Faceted Gemstone)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Chalcedony (Yellow Agate)
Cryptocrystalline Quartz (SiO2)
Calcite on Host Rock
Calcium Carbonate (CaCO3)
Emerald in Matrix (Quartz/Calcite)
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Vanadinite on Matrix
Vanadinite (Pb5(VO4)3Cl)
Citrine (likely Heat-Treated Amethyst)
Silicon Dioxide (SiO2)