Sandstone
Arenite (SiO2 based)
Category
Browse sedimentary or igneous fragment specimens identified by the Rock Identifier community.
Sandstone
Arenite (SiO2 based)
Fossiliferous Sandstone / Quartzite Pebble
Sedimentary rock with skeletal fragments (e.g., Paleozoic crinoid/brachiopod fossils)
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (composed mostly of SiO2)
Sandstone
Sedimentary Rock (Quartz Arenite)
Sandstone (Red)
Arenite (Fe2O3 heavy)
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
Orange Quartz
Silicon Dioxide (SiO2) with Hematite inclusions
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
Lunar Breccia Meteorite
Lunar Feldspathic Breccia
Lunar Meteorite
Lunar Feldspathic Breccia
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
Milky Quartz
Silicon Dioxide (SiO2)
Basalt
Extrusive mafic igneous rock
Scoria
Scoria (Vesicular Basaltic Rock)
Yellow Calcite
Calcium Carbonate (CaCO3)
Fossiliferous Limestone
Bioclastic Limestone (Calcium Carbonate, CaCO3)
Sandstone
Sandstone (SiO2 dominant, with minor feldspar and clay minerals)
River Pebble (Gravel Pebble)
Stream-rounded Rock / Siliciclastic Pebble
Limestone (with weathering rind)
Calcium Carbonate (CaCO3)
Sandstone (Pebble)
Sandstone (SiO2 with iron oxide impurities)
Limestone Pebble
Limestone (CaCO3)
Sandstone
Arenite (SiO2 dominant)
Sandstone
Sandstone (composed predominantly of Quartz, SiO2)
Sandstone (Quartzose Sandstone / Feldspathic Sandstone)
SiO2 with minor impurities (Fe2O3, KAlSi3O8)
Sandstone
Arenite (primarily SiO2)
Sandstone (Quartzose)
Arenite (SiO2 principal composition)
Sandstone
Arenite (primarily Quartz-rich)
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with fossil inclusions
Sandstone
Arenite (SiO2 primarily)
Sandstone (likely Red/Brown Sandstone)
Arenite (SiO2 based)
Fossiliferous Limestone (Coral Rag)
Biogenic Limestone (Calcium Carbonate, CaCO3)
Sandstone
Arenite
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite
Sandstone
Arenite (Silicon Dioxide, SiO2 based)
Sandstone (Graywacke)
Clastic Sedimentary Rock (Lithic Sandstone)
Coquina
Bioclastic Limestone (Coquina)
Sandstone
Arenite (SiO2 primarily)
Sandstone
Arenite (primarily SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
River Gravel
Polymictic Gravel / Detrital Rock Aggregate