Quartz
Silicon Dioxide (SiO2)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone
Clastic Sedimentary Rock
Milky quartz (rough quartz chunk)
Quartz, silicon dioxide (SiO₂)
Sandstone
Arenite (siliciclastic sedimentary rock composed mostly of quartz)
River Pebble (Granitic Sandstone)
Clastic sedimentary rock (Lithic Arenite)
Quartz pebble
Quartz (SiO2)
Quartz pebble (Agate / Chalcedony)
Silicon Dioxide (SiO2)
Sandstone (Quartz-rich)
Arenite (SiO2)
Sandstone Pebble / Quartzite Pebble
SiO2 (Silicon Dioxide enriched sedimentary rock)
Brown Jasper (Tumbled)
Silicon Dioxide (SiO2) with iron oxide inclusions
Coarse-grained Quartz with Feldspar inclusions
Crystalline Quartz (SiO2) with Orthoclase/Plagioclase Feldspar inclusions
Druzy Quartz on Matrix (likely Limestone or Sandstone)
Silicon Dioxide (SiO2) with various trace impurities
Rutilated Quartz
SiO2 with TiO2 inclusions
Shale (or Mudstone)
Laminose Mudrock (composition: clay minerals, quartz, and mica flakes)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz with Mica and Pyrite
Quartz (SiO2) with Muscovite (KAl2(AlSi3O10)(OH)2) and Pyrite (FeS2)
Quartz Pebble
Silicon Dioxide (SiO2)
Clear Quartz Sphere
Crystalline Silicon Dioxide (SiO2)
Quartz (Tumbled)
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (Chalcedony), SiO2
Smoky Quartz and Chalcedony Geode Fragment
Silicon Dioxide (SiO2)
Quartz Pebble (Iron-Stained Quartz)
Silicon Dioxide (SiO2) with Hematite/Limonite inclusion
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Rose Quartz (or Quartzite)
Silicon Dioxide (SiO2)
Chert (White Chert/Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Ferruginous Sandstone (with Iron Oxide staining)
Clastic Sedimentary Rock - Quartz Arenite/Wacke
Agate
Silicon dioxide (Chalcedony), SiO2
Chert (Quartzite Pebble)
Microcrystalline Quartz (SiO2)
Chalcedony (Yellow Agate / Carnelian Chalcedony)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Sandstone
Arenite (predominantly SiO2 quartz grains)
Clear Quartz Point
Silicon Dioxide (SiO2)
Quartz Pebble (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
Quartz Pebble
Silicon Dioxide (SiO2)
Red Aventurine
Quartz variety (SiO2 with Hematite/Goethite inclusions)
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
Quartz (Rose or Clear variety)
Silicon Dioxide (SiO2)