Quartz
Silicon Dioxide (SiO2)
Category
Browse sedimentary rock (technically chert, a microcrystalline quartz) specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Sandstone (with Quartz Vein/Inclusion)
Arenite (primarily SiO2)
Quartz (pebble)
Quartz (SiO₂)
Yellow Quartzite Pebble
Quartzite (primarily Silicon Dioxide - SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (Sandstone)
Conglomerate
Conglomerate (Clastic sedimentary rock)
Faceted Clear Quartz
Crystalline Silicon Dioxide (SiO2)
Dyed Dalmatian Stone
Aplite (Alkali-feldspar granite) with Arfvedsonite
Sandstone (Pebble)
Arenite / Clastic Sedimentary Rock
Blue Lace Agate (Polished Point)
Silicon Dioxide (SiO2) - Variety of Chalcedony
Pink Quartzite (Water-worn)
Quartzite (SiO2)
Green Aventurine (Green Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Hag Stone
Perforated Flint or Chert (SiO2)
Quartzite
Quartzite (SiO2)
Sandstone
Arenite (primarily SiO2)
Chert (specifically tan/pink variety)
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 principal)
Chert (Cream Variety)
Microcrystalline silica (SiO2)
Ferruginous Quartz
Quartz with Iron Oxide inclusions (SiO2 + Fe2O3)
Chert (Gravel)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Sandstone (Greywacke)
Clastic Sedimentary Rock (SiO2 with lithic fragments)
Red Chert (Jasper)
Silicon Dioxide (SiO2)
Geode (Unopened)
Siliceous Septarian Concretion / Geode (SiO2)
Limestone (Weathered Aggregate)
Sedimentary Carbonate Rock (CaCO3)
Sandstone (Greywacke/Lithic Sandstone)
Arenite / Lithic Sandstone
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert Nodules
Chert (Silicon Dioxide, SiO2)
Quartzite (with mineral vein)
Metamorphosed Quartz-rich Sandstone (SiO2)
Quartzite
Quartzite (primarily SiO2)
Jasper (Red and Yellow)
Silicon Dioxide (SiO2) with iron oxide impurities
Basalt with Quartz Vein
Basalt containing a microcrystalline quartz (SiO2) intrusion
Quartzite
Metamorphosed Quartz Sandstone
River Quartzite (River Rock)
Quartzite (SiO2)
Conglomerate
Conglomerate (clastic sedimentary rock)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)