Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Arenite
Sandstone
Arenite (SiO2 primarily)
Garnet Beads
Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)
Pebble (likely Quartz or Chert)
SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.
Sandstone
Arenite
Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
Shale / Mudstone
Laminated Mudrock (Siliciclastic Sedimentary Rock)
Shale (Beach-worn)
Laminated Pelite (primarily clay minerals and quartz)
Sandstone (likely Graywacke or Lithic Sandstone)
Clastic Sedimentary Rock
Sandstone
Arenite
Sandstone (Quartz-rich)
Arenite (SiO2)
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
Sandstone
Arenite (primarily SiO2)
Siltstone Pebble with Veining
Siltstone
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
Sandstone (Quartzite-rich)
Clastic sedimentary rock (SiO2 primary)
Sandstone
Arenite (SiO2 principal)
Mudstone
Lutylite (group of fine-grained sedimentary rocks)
Sandstone
Arenite
Sandstone
Arenite (primarily SiO2)
Sandstone Pebble
Sandstone (primarily SiO2)
Pyrite
Iron Sulfide (FeS2)
Shale (or Mudstone)
Clay mineral aggregate / Fine-grained siliciclastic sedimentary rock
Red Sandstone Pebble
Sedimentary Quartz Arenite / Arkose
Coarse Sandstone
Arenite (SiO2 based)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Magnetite or Ironstone Nodule
Magnetite (Fe3O4) or Hematite-rich Sedimentary Nodule
Sandstone
Arenite (primarily Quartz-rich)
Blue calcite (probable)
Calcite, calcium carbonate (CaCO₃)
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
Siltstone or Mudstone
Siltstone (composed primarily of silt-sized particles)
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
Sandstone Pebble
Sandstone (SiO2 rich clastic rock)
Sandstone
Arenite
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone
Sandstone ( преимущественно SiO2 )
Shale
Laminated Mudstone (Shale)
Sandstone
Arenite
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (Ferruginous)
Arenite with Iron Oxide (Fe2O3) cement