Quartz Pebble
Silicon Dioxide (SiO2)
Category
Browse mineral (variety of quartz) specimens identified by the Rock Identifier community.
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz with Matrix
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
Quartz (Grain/Fragment)
Silicon Dioxide (SiO2)
Banded Gneiss (with possible weathered sulfide or iron staining)
Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides
Brown Agate
Silicon Dioxide (SiO2)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Satin Spar Selenite (Peach Calcite/Peach Gypsum)
Hydrated Calcium Sulfate (CaSO4·2H2O)
Agate (specifically Botswana or Lake Superior style chalcedony)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartzite (Pink/Red variety)
Quartzite (SiO2 with iron oxide impurities)
Yellow Apatite Sphere (Polished)
Fluorapatite / Ca5(PO4)3F
Greenstone (Greenschist facies)
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
Amazonite
Amazonite (KAlSi3O8, a variety of Microcline)
Dream Amethyst (Chevron Amethyst)
Silicon Dioxide with Iron impurities (SiO2)
Bornite
Bornite (Cu5FeS4)
Conglomerate
Conglomerate (clastic sedimentary rock)
Quartz
Silicon Dioxide (SiO₂)
Granite
Phaneritic Felsic Igneous Rock
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Gossan (Iron Hat) with Quartz and Chlorite
Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite
Pyrite
Iron Sulfide (FeS2)
Quartz / Common Opal
Silicon Dioxide (SiO2)
Granite
Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)
Banded Gneiss
Gneiss (high-grade metamorphic silicate rock)
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
Gneiss
Gneiss (high-grade metamorphic rock)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz Pebble (Iron-Stained)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Jasper
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (SiO ₂)
Quartz
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Ferruginous Quartz
Silicon Dioxide with Hematite/Limonite inclusions (SiO2 + Fe2O3)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Ferruginous Quartz (Carnelian-tinted Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions