Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Sandstone (specifically Arkose or Ferruginous Sandstone)
Sandstone (SiO2 with iron oxide inclusions)
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
Sandstone (Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Sandstone (Quartz-rich)
Arenite (SiO2 based clastic rock)
Granite Cobble/Pebble
Granite
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3/FeO(OH) cementing agents)
Sandstone
Arenite (composed primarily of Quartz: SiO2)
Sandstone (Ferruginous)
Arenite (with Goethite/Limonite cement)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily SiO2)
Red Mudstone (Siltstone)
Lutite (primarily Quartz and Clay minerals with Hematite)
Sandstone (likely Quartzose Sandstone pebble)
Arenite (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Quartz
Quartz (SiO₂)
Limestone
Calcium Carbonate (CaCO3)
Basalt
Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)
Gabbro
Gabbro
Sandstone (likely a river or beach pebble)
Sandstone (a clastic sedimentary rock)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Sandstone (various mineral compositions)
Sandstone (Ferruginous)
Arenite (variable SiO2 with Fe2O3 staining)
Limestone
Calcium Carbonate (CaCO3)
Clear Quartz
Silicon Dioxide (SiO2)
Sandstone (Weathered)
Arenite (primarily SiO2)
Granite
Granite (a plutonic rock)
Limestone
Calcium Carbonate (CaCO3)
Limestone (specifically fossiliferous/skeletal limestone)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)
Sandstone (Quartzose)
Arenite (SiO2 principal)
Sandstone (with Manganese staining)
Arenite (composed primarily of SiO2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)
Limestone
Calcium Carbonate (CaCO3)
Sandstone with Bedding Planes
Arenite (Sedimentary rock composed primarily of sand-sized minerals)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with iron oxide Fe2O3 cement)
Sandstone (Quartzite-rich Pebble)
Arenite (composed primarily of SiO2)
Limestone
Calcareous sedimentary rock (CaCO3)
Sandstone
Sandstone (arenite is a more specific geological term for a clean sandstone, while wacke refers to a dirty sandstone with significant matrix)
Red Jasper
Silicon Dioxide (SiO2)
Quartz (likely)
Quartz (SiO2 - Silicon Dioxide)
Agate (Nodule/Chert)
Silicon Dioxide (SiO2)