Sandstone
Arenite (primarily Quartz Arenite)
Category
Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.
Sandstone
Arenite (primarily Quartz Arenite)
Sandstone (River Rock)
Arenite (SiO2 based sedimentary rock)
Chalcedony in Matrix (likely Agatized Coral or Chert)
Silicon Dioxide (SiO2)
Sandstone with Hematite staining
Arenite with Fe2O3 inclusions
Sandstone
Arenite (SiO2 primarily)
Sandstone (Ferruginous Concretion)
Arenite (with iron oxide cement)
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
Conglomerate
Conglomerate rock
Sandstone
Arenite (SiO2 principal)
Sandstone (lithic/quartz variant)
Clastic sedimentary rock (SiO2 predominant)
Sandstone (with manganese staining)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Sedimentary Rock (Quartz Arenite)
Sandstone (Feldspathic / Arkose)
Sandstone (SiO2 with variable mineral grains)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
River Pebble
Siliceous rock fragment
Sandstone
Arenite (SiO2 primarily)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Chert (Common Opal or Agate)
Microcrystalline Quartz (SiO2)
Sandstone (lithic/arkosic)
Clastic sedimentary rock (primarily SiO2)
Carved quartz skull, likely smoky quartz or gray chalcedony
Silicon dioxide (SiO₂), quartz or microcrystalline quartz
Sandstone / Chert Gravel
SiO2 (Silicon Dioxide based clastic sedimentary rock)
Sandstone (Red)
Arenite (composed primarily of SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Clastic sedimentary rock (Quartz arenite or arkose)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2 with minor Fe2O3)
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
Sandstone
Arenite
Chert (Flint)
Microcrystalline Quartz (SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)
Sandstone (Weathered Pebble)
Sedimentary Rock (Quartz arenite)
Limestone ( weathered ) / Chert Nodular Rock
Sedimentary rock (primarily Calcium Carbonate, CaCO3, with Microcrystalline Quartz, SiO2)
Sandstone
Arenite
Sandstone
Sedimentary Rock (Quartz arenite)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)
Quartz Geode
Silicon Dioxide (SiO2)
Shale
Laminated Mudstone
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Fossil bivalve shell
Likely an extinct or modern-like ribbed cockle/scallop; exact genus requires locality and diagnostic hinge features