Sandstone
Arenite (composed primarily of SiO2)
Category
Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (SiO2 based)
Conglomerate
Conglomerate (clastic sedimentary rock)
Sandstone
Arenite (SiO2 primarily)
Chert (River Stone)
Microcrystalline Quartz (SiO2)
Chert (White Chert)
Silicon Dioxide (SiO2)
Sandstone
Sandstone (various mineral compositions)
Sandstone
Arenite (SiO2 based with various mineral cements)
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
Sandstone (River Cobble)
Sandstone (composed predominantly of SiO2 - Quartz)
Sandstone (Stream-rounded Cobble)
Arenite (composed primarily of SiO2, Silica)
Graphite-bearing metamorphic rock (probable graphite schist)
Graphite schist; predominantly quartz–mica–graphite, with possible feldspar and sulfide minerals
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Pebble
Lithic fragment / Water-worn rock
Sandstone
Arenite (SiO2 based typically)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Fe2O3 staining)
Laterite Gravel with Quartz
Ferruginous Laterite (Fe2O3·nH2O)
Moss-covered Rock Fragment
Weathered Rock Fragment with Epilithic Growth
Fossil Shell (Bivalve)
Phylum Mollusca, Class Bivalvia
Fossil Seashell
Invertebrate fossil (Bivalvia)
Chert / Jasper
Silicon Dioxide (SiO2)
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
K2 Jasper (K2 Granite)
Granite with Azurite inclusions (SiO2 + Cu3(CO3)2(OH)2)
Quartz
Silicon Dioxide (SiO2)
Limestone
Sedimentary Rock (Primarily CaCO3)
Conglomerate
Conglomerate (clastic sedimentary rock)
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
Conglomerate
Conglomerate (clastic sedimentary rock)
Conglomerate
Conglomerate (clastic sedimentary rock)
Conglomerate
Conglomerate (Sedimentary Clastic Rock)
Conglomerate
Conglomerate (Clastic sedimentary rock)
Conglomerate
Clastic sedimentary rock (Conglomerate)
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Chert (specifically Yellow or River Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Limonite (Iron Ore)
FeO(OH)·nH2O
Shale
Fissile Mudstone
Travertine
Calcareous Tufa / Travertine (CaCO3)
Chert (Common Opal/Agate mixture)
Microcrystalline Quartz (SiO2)
Fossiliferous Limestone
Fossiliferous Calclutite / Bio-calcarenite (CaCO3)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Flagstone
Sedimentary Sandstone / Flagstone