Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz with Mica inclusions (likely Schist or Gneiss host)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)
River Pebble (Likely Chert or Fine-Grained Sandstone/Quartzite)
Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)
Green Quartzite
Quartzite (primarily SiO2 with chlorite inclusions)
Turquoise
Hydrated phosphate of copper and aluminum; CuAl6(PO4)4(OH)8·4H2O
Native Gold
Native Gold (Au)
Gold Nugget
Native Gold (Au)
White Quartz
Silicon Dioxide (SiO2)
Chert
Silicon dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) within a geode
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
Gold Nugget
Native Gold (Au)
River Cobble (likely Sandstone or Siltstone type)
Sandstone or Siltstone (common rock types that form river cobbles)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) with varying mineral impurities
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO₂)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Herkimer Diamond
Quartz (Silica - SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Milky Quartz
Silicon Dioxide (SiO2)
Yellow Chert or Jasper
Microcrystalline Quartz (SiO2)
Quartz (Milky/Bull Quartz)
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon Dioxide (SiO2)
Green Aventurine
Silicon dioxide (SiO2) with fuchsite inclusions
Quartz (likely milky/rose quartz variety)
Quartz (SiO2 - Silicon Dioxide)
Gold Ore in Quartz/Schist
Auriferous Quartz and Sulfide-bearing Schist
Amethyst (Chevron Amethyst)
Amethystine Quartz (SiO2)
Quartz (pebble)
Quartz (SiO₂)
Milky Quartz Pebble with Chert
Silicon Dioxide (SiO2)
Orange Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Dalmatian Stone (often called Dalmatian Jasper)
Peralkaline Feldsphathic Igneous Rock
Carnelian (Chalcedony)
Cryptocrystalline Quartz (SiO2) with Iron Oxide impurities
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Quartz Druze (on Matrix)
Silicon Dioxide (SiO2)
Pyrite on Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz with Chlorite/Mica inclusions
Silicon Dioxide (SiO2) with inclusions
Quartz
Quartz (SiO2)