Conglomerate
Conglomerate (clastic sedimentary rock)
Category
Browse mineral on sedimentary rock specimens identified by the Rock Identifier community.
Conglomerate
Conglomerate (clastic sedimentary rock)
Sandstone
Arenite (Siliclastic sedimentary rock)
Sandstone nugget
Arenite (primarily Quartz SiO2)
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
Quartz
Silicon Dioxide (SiO2)
Granite Gneiss
Granitic Gneiss
Shale fragment
Shale (Laminated Mudstone)
Gneiss
Foliated Metamorphic Rock
Fossil-bearing sedimentary rock (possible bone or shell fossil)
Unidentified fossiliferous sedimentary matrix; exact fossil and host rock cannot be determined from the image
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
Fossil Shark Tooth
Selachii (fossilized dentition)
Red Sandstone
Arenite (with iron oxide cement)
Banded Sandstone
Quartz-rich Arenite Sandstone
Quartz Sandstone
Quartz Arenite
Sandstone
Arenite (SiO2 based)
Quartz
SiO2 (Silicon Dioxide)
Sandstone
Clastic sedimentary rock (Quartz arenite or arkose)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Gravel and Pebbles
Unconsolidated rock fragments / detrital sediment
Banded gneiss
Gneiss, likely quartz–feldspar–mica gneiss
Cowrie Shell Fossil
Cypraea sp.
Red Jasper (or Agate/Jasper mixture)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Greywacke (likely)
Greywacke (a type of sandstone)
Quartz (Druzy on Matrix)
Silicon Dioxide (SiO2)
Sandstone
Sandstone (clastic sedimentary rock, predominantly SiO2)
Conglomerate (Puddingstone)
Conglomerate (specifically, clastic sedimentary rock)
Quartz Geode
Silicon Dioxide (SiO2) in Geodic habit
Sandstone (Pebble)
Sandstone (SiO2 dominated clastic sedimentary rock)
Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily SiO2 with various cementing agents)
Limonite (Iron Ore)
Goethite and related iron hydroxides (FeO(OH)·nH2O)
Fossilized Bone
Petrified Bone / Biogenic Sedimentary
Small rounded pebble, likely quartz-rich river or beach stone
Unidentified lithic pebble; exact rock type cannot be determined from the image
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Chert Breccia
Brecciated Chert (Sedimentary Rock)
Sandstone
Sedimentary Rock (Quartz arenite)
Conglomerate
Conglomerate (Detrital sedimentary rock)
Brecciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
Sandstone (Quartzite Pebble)
Arenite (primarily SiO2)