Quartz
Silicon dioxide (SiO2)
Category
Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.
Quartz
Silicon dioxide (SiO2)
Basaltic Tuff / Volcanic Breccia
Pyroclastic Breccia / Lithic Tuff
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Snowflake Obsidian
Volcanic glass with Spherulite inclusions (SiO2)
Labradorite
Labradorite, (Ca, Na)(Al, Si)4O8
Turquoise
Hydrous phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Limonite (Iron Ore)
Goethite and related iron hydroxides (FeO(OH)·nH2O)
Sandstone (Quartz Sandstone)
Arenite (primarily SiO2)
Chert / Flint
Cryptocrystalline quartz (SiO2)
Golden Healer Quartz
Ferruginous Quartz (SiO2 with Fe2O3 inclusions)
Orange Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Caribbean Calcite
Calcium Carbonate with Argonite (CaCO3)
Limonite (Iron Ore)
Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)
Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
Nephrite Jade
Nephrite
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
Sandstone (with Limonite staining)
Arenite (primarily SiO2 with FeO(OH)·nH2O)
Banded Gneiss
Gneiss (high-grade metamorphic silicate rock)
Dumortierite Quartz (Blue Quartz)
Al7BO3(SiO4)3O3 (Aluminum Boro-silicate included in Quartz)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone
Arenite
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Mica Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
Chert (White/Light Tan)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Stichtite (often found in Serpentinite)
Stichtite Mg6Cr2CO3(OH)16·4H2O
Quartz (Water-worn pebble)
Silicon Dioxide (SiO2)
Agate Geode
Microcrystalline Quartz (SiO2)
Ironstone Concretion (likely)
Goethite/Hematite/Limonite cemented sediment
Pink Granite
Felsic intrusive igneous rock (composition: SiO2 and Al2O3)
Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)
Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)
Copper-bearing Quartz (with Malachite and Iron Oxides)
Quartz (SiO2) with Malachite (Cu2CO3(OH)2) and Hematite/Limonite (Fe2O3)
Dalmation Stone (often called Dalmatian Jasper)
Peralkaline Rock (Microgranite/Aplite), SiO2 with inclusions of Arfvedsonite
Amethyst on Agate/Basalt Matrix
Silicon Dioxide (SiO2) with iron impurities
Chert (often referred to as 'Jasper' when red)
Chert (microcrystalline quartz, SiO₂)
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous matrix
Sandstone
Arenite (SiO2 based)
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Kimberlite with Diamond
Kimberlite (Porphyritic Peridotite)
Sandstone
Arenite
Quartz Vein in Host Rock (Gneiss/Schist)
Silicon Dioxide (SiO2) within a metamorphic matrix