Sandstone
Arenite
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Sandstone
Arenite
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Weathered quartz-bearing sandstone
Quartz arenite or feldspathic sandstone (tentative)
Green Sandstone Pebble (River/Beach Pebble)
Glauconitic Sandstone
Limestone with Chert
Calcium Carbonate (CaCO3) with Silica (SiO2) inclusions
Fossilized Fish (Lepidotes)
Lepidotes sp. (Order: Lepisosteiformes)
Limestone
Calcium Carbonate (CaCO3)
Sandstone Pebble
Arenite (SiO2 dominated)
Limestone (River Pebble / Fossiliferous Limestone)
Calcium Carbonate (CaCO3)
Limestone (River Pebble)
Calcium Carbonate (CaCO3)
Sandstone
Sandstone (SiO2-rich detrital sedimentary rock)
Sandstone
Arenite
Sandstone
Sandstone (Siliciclastic Sedimentary Rock)
Gray Limestone
Calcite-rich Sedimentary Rock (CaCO3)
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
Limestone Gravel
Calcium Carbonate (CaCO3)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Limestone
Calcium carbonate (CaCO3)
Sandstone (Quartzite-rich River Cobble)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Quartz-rich)
Arenite
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (Clastic Sedimentary Rock)
Sandstone
Arenite (SiO2 based)
Sandstone (Quartz-rich)
Arenite (composed mainly of SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (likely Quartzose)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (with Hematite/Limonite cement)
Sandstone (Ferruginous)
Arenite with Iron Oxide matrix
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Arenite
Sandstone (likely Iron-rich or Arkosic)
Arenite (SiO2 with FeO(OH) or Fe2O3 staining)
Sandstone
Arenite (composed primarily of SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chalk / Sedimentary Limestone
Calcium Carbonate (CaCO3) - Biogenic Sedimentary Rock
Sedimentary Pebble (Sandstone)
Clastic Sedimentary Rock (SiO2 dominant)
Chalk (Sedimentary Limestone)
Calcium Carbonate (CaCO3) - Bioclastic Limestone
Weathered basalt or iron-rich volcanic rock
Mafic volcanic rock, likely basalt; exact identification requires testing