White Quartz
Quartz (Silicon Dioxide, SiO2)
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
White Quartz
Quartz (Silicon Dioxide, SiO2)
Sandstone
Arenite (primarily Quartz, SiO2)
Sandstone (Ferruginous)
Arenite (Fe-rich)
River Cobble (Sandstone)
Arenite / Quartz Sandstone
Quartz
Silicon Dioxide (SiO2)
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
Red Sandstone
Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)
Gneiss
Gneiss
Quartz
Quartz (SiO2 - Silicon Dioxide)
Chert (Nodule)
Silicon Dioxide (SiO2)
Iron-Nickel Meteorite (Possible Chondrite or Oxidized Iron)
Siderite (Nickel-Iron) or Chondrite (Si/Fe composite)
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Arenite (Quartz Sandstone)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite
Sandstone (likely Graywacke or Lithic Sandstone)
Clastic Sedimentary Rock
Sandstone
Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)
Red Sandstone
Arenite (Ferruginous Sandstone)
Limestone
Calcium Carbonate (CaCO3)
Chert (Chert Nodule)
Microcrystalline quartz (SiO2)
Hag Stone (Piddock bored rock)
Calcareous sedimentary rock featuring Pholadidae borings
Gabbro (potentially weathered)
Mafic Plutonic Rock (Gabbro/Diabase)
Gabbro
Gabbro
Druzy Quartz on Chalcedony Matrix
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Ferric Iron inclusions
Quartz (Druzy / Goldstone Gemstone Cabochon)
Silicon Dioxide (SiO2)
Limestone (Crushed Gravel)
Limestone (Calcium Carbonate, CaCO3)
Red Jasper
Silicon dioxide (Microcrystalline Quartz, SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (Flint Nodules)
Silicon Dioxide (SiO2)
Quartz (likely)
Quartz (SiO2 - Silicon Dioxide)
Quartz Pebble
Silicon Dioxide (SiO2)
Precious Opal
Hydrated Silica (SiO2·nH2O)
Quartz
SiO₂ (Silicon Dioxide)
White Precious Opal
Hydrated Silica (SiO2·nH2O)
Gabbro (likely with Pyrite/Sulfide mineralization)
Mafic Intrusive Igneous Rock
Chert (specifically Yellow or River Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
Sandstone (likely Quartzose)
Arenite (primarily SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)