Travertine
Calcium Carbonate (CaCO3)
Category
Browse anthropogenic sedimentary (man made) specimens identified by the Rock Identifier community.
Travertine
Calcium Carbonate (CaCO3)
Quartzwacke / Impure Sandstone
Arenite with minor lithic fragments (Silicon Dioxide matrix)
Bivalve Fossil (Shell-bearing Sedimentary Rock)
Class Bivalvia (Phylum Mollusca) within a Calcarenite/Sandstone matrix
Limonite Concretion
Limonite (FeO(OH)·nH2O) Pseudomorph
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (primarily Quartz, SiO2)
Ferruginous Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 cement)
Petrified Wood
Silicified Wood
Coal
Bituminous or sub-bituminous coal (carbonaceous rock)
Jasper
Microcrystalline Quartz (SiO2)
Starfish Fossil
Asteroidea fossil
Sandstone
Arenite
Limestone
Calcium carbonate (CaCO3)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Limestone
Sedimentary Rock (Primarily CaCO3)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Limestone Cobble
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Clastic Sedimentary Rock (Quartz arenite)
Sandstone
Clastic sedimentary rock (Quartz arenite)
Sandstone (likely Arkose or Lithic)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Quartzose Sandstone (Sedimentary Rock)
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
Sandstone or Quartzite
Arenite (if sedimentary) / Quartzite (if metamorphic)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Sandstone
Sandstone (SiO2-rich clastic sedimentary rock)
Sandstone pebble
Sandstone (siliciclastic sedimentary rock)
Sandstone
Sandstone (SiO2 dominant)
Sandstone (Lithic Sandstone / Greywacke)
Sandstone (SiO2 rich clastic sedimentary rock)
Limestone with Calcite Crust
Sedimentary Calcium Carbonate (CaCO3)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Fossiliferous Limestone with Quartz Veining
Limestone (Calcium Carbonate, CaCO3)
Limestone Cobble
Sedimentary Limestone (Calcium Carbonate, CaCO3)
Fossiliferous Limestone
Carbonate sedimentary rock (CaCO3) with bioclasts
Sandstone
Arenite (typically SiO2 based)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)
Limestone (Beach Pebble)
Sedimentary Calcium Carbonate (CaCO3)
Limestone (Weathered Aggregate)
Sedimentary Carbonate Rock (CaCO3)
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (Siliclastic sedimentary rock)