Quartz Crystal (specifically a Double-Terminated variety)
Silicon Dioxide (SiO2) - Low Quartz
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Quartz Crystal (specifically a Double-Terminated variety)
Silicon Dioxide (SiO2) - Low Quartz
Orange Quartzite (Tumbled)
Quartzite (SiO2)
Quartz (with iron oxide staining)
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
Glauconitic Sandstone
Glauconitic Sandstone with high Glauconite concentration ((K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)
Sandstone
Arenite
Quartz
Silicon Dioxide (SiO2)
Ferruginous Sandstone (Ironstone)
Arenite with Limonite/Goethite cement
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Gold Nugget
Native Gold (Au)
Chalcedony
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)
Chert / Flint
Chert (Microcrystalline Quartz, SiO2)
Chert (specifically Gray Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone
Arenite (primarily SiO2)
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
Chert (varietal: Flint Pitted Pebble)
Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Agate Geode Slice (with Druzy Quartz)
Silicon Dioxide (SiO2)
Ferruginous Sandstone (Ironstone Nodules)
Ferruginous Quartz-Arenite (with Goethite/Hematite cement)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 primarily)
Chert
Siliceous sedimentary rock (predominantly microcrystalline quartz, SiO2)
Milky Quartz (Tumbled/Water-worn)
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Geode (Chert or Quartz Nodule)
Silicon Dioxide (SiO2)
Sandstone (likely a river or beach pebble)
Sandstone (a clastic sedimentary rock)
Sandstone (likely Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
Amethyst
SiO2 (Silicon Dioxide with Iron impurities and natural radiation influence)
Amethyst (Faceted)
Amethyst (Silicon Dioxide with iron impurities, SiO2)
Sandstone with Secondary Mineral Encrustation
Arenite with Silica/Calcite deposits (SiO2 or CaCO3)
Chert (Brecciated Chert)
Silicon Dioxide (SiO2)
Carnelian (Agate)
SiO2 (Silicon Dioxide with Iron Oxide impurities)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Banded Agate
Sedimentary Cryptocrystalline Quartz (SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)