Sandstone Beach Pebble
Clastic Sandstone (SiO2 - Quartz-dominant)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Sandstone Beach Pebble
Clastic Sandstone (SiO2 - Quartz-dominant)
Chert (varietal: Jasper or Flint)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Banded Chert (Agate-like Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Sandstone (Quartzite-rich Pebble)
Arenite (primarily SiO2)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
Chert (specifically Yellow Jasper)
Sedimentary Cryptocrystalline Quartz (SiO2)
Quartz (Peach/Orange variety)
Silicon Dioxide (SiO2)
Arkosic Sandstone
Arkose (Clastic Sedimentary Rock)
Petrified Wood
Silicified Wood (primarily SiO2 - Silicon Dioxide)
Sandstone (Ferruginous)
Sandstone (SiO2 with iron oxide inclusions)
Banded Iron Formation
Banded Iron Formation (BIF)
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with iron oxide and other mineral impurities
Emerald in Matrix
Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium
Sandstone (Quartzose Pebble)
Clastic sedimentary rock (primarily SiO2)
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Fe2O3)
Sandstone (Pebble)
Clastic sedimentary rock (SiO2 primary)
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
Sandstone (likely Quartz Sandstone)
Arenite (composed primarily of SiO2)
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
Gold Nugget
Native Gold (Au)
Red Sandstone
Arenite (predominantly Quartz with Hematite cementation)
Banded Chert in Matrix
Microcrystalline Quartz (SiO2)
Gneiss (High-grade Metamorphic Rock)
Gneiss (Metamorphic silicate rock)
Ferruginous Sandstone
Sandstone with Iron Oxide (Limonite/Goethite)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
River Quartz (Milky and Smoky mix)
Silicon Dioxide (SiO2)
Chert (Quartz Variety)
Chert (mostly SiO2 / Silicon Dioxide)
Red Sandstone
Arenite (with Iron Oxide cement)
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Smoky Quartz (Tumbled)
Silicon Dioxide (SiO2)
Ferruginous Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Chert (and/or Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Sandstone (Weathered Pebble)
Arenite (primarily SiO2)
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Brown variety)
Silicon Dioxide (SiO2)
Graywacke
Graywacke
Quartz (specifically Milky or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)