Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Category
Rock (Likely Sedimentary)
Browse rock (likely sedimentary) specimens identified by the Rock Identifier community.
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (lithic wacke/arenite)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (River Rock)
Arenite (composed primarily of SiO2)
sedimentary
Gneiss (specifically Granitic Gneiss)
Gneissic Metamorphic Rock
metamorphic
Sedimentary rock with quartz veining
Laminated siltstone or mudstone with hydrothermal quartz veins
sedimentary
Sandstone (Fossiliferous)
Arenite / Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Sandstone (likely Quartzose type)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Quartz Geode (likely within Limestone or Dolomite matrix)
Quartz (SiO₂)
Mineral within a Sedimentary Rock
Limestone with Algal/Lichen Colonization
Calcium Carbonate (CaCO3)
sedimentary
Blue Agate (Dyed)
Silicon Dioxide (SiO2)
mineral
Quartz / Common Opal
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2 with various cementing agents)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Vuggy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Chert (Nodular)
Microcrystalline Silica (SiO2)
sedimentary
Sandstone (Stream-rounded)
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Sandstone (likely Calcareous or Quartz-rich)
Arenite (SiO2 based typically)
sedimentary
Chert (Jasper/Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
Ferruginous Siltstone or Mudstone
Ferruginous Siltstone / Goethitic Sandstone
sedimentary
Painted River Pebble (likely Basalt or Greywacke)
Aphanitic Lithic Clast with Anthropogenic Pigment coating
Sedimentary or Igneous
Veined Pebble (likely a Quartz-Veined Pebble)
Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)
Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)
Quartz Druze (Crystalline Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone (Weathered Cobble)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
sedimentary
Fossiliferous Sedimentary Rock (Coquina/Limestone)
Fossiliferous Calcarenite / Bioclastic Limestone
sedimentary
Chalcedony (Common Agate)
Silicon Dioxide (SiO2)
mineral
Limestone (specifically Grainstone or Micrite)
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (likely Arkose)
Arenite (composed mainly of SiO2 with Feldspar)
sedimentary
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Weathered Pebble)
Arenite (SiO2 primarily)
sedimentary
Sandstone (Quartz-rich)
Clastic sedimentary rock (SiO2 primary)
sedimentary
Sandstone
Arenite (SiO2 based with quartz grains)
sedimentary
Fossiliferous Shale
Laminated Mudrock with plant fossils
sedimentary
Quartz Vein in Siltstone
SiO2 (Quartz) on clastic sedimentary matrix
sedimentary
Yellow Chert
Sedimentary cryptocrystalline quartz (SiO2)
sedimentary