Druzy Quartz on Chert/Siltstone
Silicon Dioxide (SiO2) on Microcrystalline Silica/Siltstone matrix
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Druzy Quartz on Chert/Siltstone
Silicon Dioxide (SiO2) on Microcrystalline Silica/Siltstone matrix
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Milky Quartz Pebbles
Silicon Dioxide (SiO2)
Clear Quartz (Facet Cut / Polished)
Silicon Dioxide (SiO2)
Granitic Pegmatite
Granitic Pegmatite with Quartz and Feldspar
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
Milky Quartz (with Iron Oxide staining)
Silicon Dioxide (SiO2)
Pebble
River Pebble / Gravel
Quartz Crystal (Geode Fragment)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Black Limestone with Calcite Veining
Bituminous Limestone (CaCO3 with Organic Carbon inclusions)
Quartz Crystal
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (Fe-oxide enriched)
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chert (Common Opal/Agate variety)
Microcrystalline Quartz (SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
Red Jasper
Silicon Dioxide (SiO2 with Fe2O3 inclusions)
Pyrite in Quartz
Iron Disulfide (FeS2) in Silicon Dioxide (SiO2)
Jasper
Microcrystalline Quartz (SiO2)
White Buffalo Turquoise (or Howlite/Magnesite)
Calcite/Dolomite or Magnesite with Chert/Quartz inclusions
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
Ptygmatic Migmatite
Migmatite (consisting of Neosome and Paleosome fractions)
Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz (Druzy / Goldstone Gemstone Cabochon)
Silicon Dioxide (SiO2)
Yellow Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Druzy) on Matrix
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)