Sandstone (Lithic Arenite)
Clastic Sedimentary Rock (primarily SiO2)
Category
Browse mineral on sedimentary rock specimens identified by the Rock Identifier community.
Sandstone (Lithic Arenite)
Clastic Sedimentary Rock (primarily SiO2)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Hematite Nodules (Moqui Marbles style)
Iron Oxide (Fe2O3)
Unknown Rock Fragment
Unknown
Dalmation Stone
Dalmation Jasper (Igneous microcrystalline quartz with arfvedsonite)
Sandstone (with Iron Oxide)
Quartz Arenite / Ferruginous Sandstone (SiO2 with Fe2O3)
Sandstone
Arenite
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (SiO2 based)
Desert Varnish on Sandstone
Ferromanganese coating on Quartz Arenite
Possible fossil-bearing pebble
Unidentified fine-grained sedimentary rock; the small orange feature may be a fossil or mineral inclusion
Asphalt aggregate
Human-made bituminous asphalt containing crushed silicate rock aggregate
Fossil Coral
Rugose Coral or Tabulate Coral (Phylum Cnidaria)
Sandstone (Calcareous or Quartz-rich)
Arenite
Fine-grained sedimentary rock, likely mudstone
Mudstone (clay- and silt-sized siliciclastic sedimentary rock)
Unidentified yellow-orange mineral fragment
Possibly iron-stained quartz, calcite, or citrine; identification is uncertain from the image
Fossil gastropod shell
Fossilized gastropod, likely a small marine snail; exact genus cannot be determined from the image
Orange Calcite
Calcium Carbonate (CaCO3)
Fossiliferous Shale
Sedimentary Clastic Rock with fossil inclusions (likely Brachiopod or Bivalve impressions)
Banded Siltstone
Banded Siltstone / Laminated Siltstone
Quartz-veined Basalt or Limestone Pebble
Quartz vein in host rock (Silicate mineral in carbonate or volcanic matrix)
Limonite (often after Pyrite)
Limonite (FeO(OH)·nH2O)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite
Wishing Stone (Basalt/Siltstone with Quartz/Calcite vein)
Carbonaceous Siltstone with Quartz (SiO2) or Calcite (CaCO3) vein
Sandstone with Iron Staining
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Sandstone with Mineral Veining or Crust
Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)
Sandstone
Sedimentary Rock (Quartz arenite or arkose)
Hematite
Iron(III) oxide (Fe2O3)
Geode
Silicon dioxide (Quartz/Chalcedony) concretion
Agate (Carnelian type)
Silicon Dioxide (SiO2)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone (likely with Borings or Vesicular Basalt)
Clastic Sedimentary Rock (Sandstone)
Quartz
Silicon Dioxide (SiO2)
Sandstone
Arenite (Clastic Sedimentary Rock)
Sandstone
Sandstone (SiO2-rich framework with variable matrix)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)
Sandstone (Calcareous/Lithic)
Sedimentary Rock (Clastic Sandstone with Calcium Carbonate cement)
Breccia
Sedimentary Breccia