Quartz (White or Milky Quartz Pebble)
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineralological Specimen
Browse mineralological specimen specimens identified by the Rock Identifier community.
Quartzite pebble
Quartzite (primarily SiO2)
metamorphic
Chert (River Pebble)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Quartz (Smoky/Milky Pebble)
Silicon Dioxide (SiO2)
mineral
Granite Cobble
Granite (Phaneritic Igneous Rock)
igneous
Coquina (Hag Stone variant)
Biocalcarenite (Coquina)
sedimentary
Quartz (specifically a water-worn river pebble)
Silicon Dioxide (SiO2)
Mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation
mineral
Dyed Blue Quartzite
SiO2 (Silicon Dioxide) with artificial colorants
metamorphic
River Rocks (Basalt and Sedimentary Stones)
Mafic Igneous Rock (Basalt) and Clastic Sedimentary Rock
igneous and sedimentary
Basalt Pebble with Epidote/Olivine
Vitreous Basalt (SiO2 with Ca/Mg/Fe silicates)
igneous
Labradorite (Feldspar)
Labradorite: (Ca,Na)(Al,Si)4O8
mineral
Basalt
Basalt
igneous
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
River Quartzite (Water-worn Quartzite)
Quartzite (primarily SiO2)
metamorphic
Fossiliferous Limestone
Limestone (CaCO3 - Calcium Carbonate)
sedimentary
Sandstone (Micaceous/Feldspathic variant)
Arenite (specifically subarkose or lithic arenite)
sedimentary
Celestine (or Celestite) Geode
Strontium Sulfate (SrSO4)
mineral
Sodalite
Sodalite (Sodium Aluminum Silicate Chloride), Na8(Al6Si6O24)Cl2
Mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone Beach Pebble
Clastic sedimentary rock (SiO2 with iron oxide cement)
sedimentary
Chert Nodule (Fossiliferous Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Granite (Alkali-feldspar Granite)
Granite (composed primarily of Quartz, K-Feldspar, and Plagioclase)
Igneous
Sandstone (Green/Yellow Siltstone variant)
Arenite or Siltstone (primarily SiO2 with mineral staining)
sedimentary
Banded Agate Geode (with Microcrystalline Quartz)
Silicon Dioxide (SiO2) - variety Chalcedony/Agate
mineral
Yellow Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Banded Agate (Lake Superior Agate type)
Agate (Cryptocrystalline Variety of Quartz, SiO2)
mineral
Yellow Chert or Jasper
Silicon Dioxide (SiO2)
sedimentary
Garnet Rhyolite
Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet
igneous
Granitic Pegmatite (Muscovite and Quartz)
Pegmatite (KAl2(AlSi3O10)(OH)2 / SiO2)
igneous
Jasper
Silicon Dioxide (SiO2)
sedimentary
Ferruginous Sandstone (Iron-rich Sandstone)
Ferruginous Arenite
sedimentary
Yellow Quartzite (Citrine-colored Quartz)
Silicon Dioxide (SiO2)
metamorphic
Sandstone (Pebble)
Arenite (primarily SiO2)
sedimentary
Yellow Agate
Agate (Microcrystalline Silicon Dioxide, SiO2)
mineral
Quartz Vein in Host Rock (Pebble)
Quartz (SiO2) with sandstone or siltstone matrix
metamorphic/igneous transition
Quartz Vein in Host Rock (clastic sediment)
Silicon Dioxide (SiO2) in matrix
sedimentary
Quartz (Specifically Clear to Smoky Quartz point)
Silicon Dioxide (SiO2)
mineral
Epidote in Granite Gneiss
Epidote bearing Orthogneiss (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic