Sandstone
Arenite
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Sandstone
Arenite
Sandstone
Sedimentary rock composed mainly of quartz sand grains
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
Sandstone
Arenite (primarily SiO2 with various cementing agents)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
River Sandstone (Lithic Arenite)
Lithic Sandstone (SiO2 dominated with lithic fragments)
Sandstone
Arenite
Weathered sandstone or siltstone
Clastic sedimentary rock, chiefly quartz and feldspar grains cemented by clay, silica, or iron oxides
Chert (Tan/Yellow variety)
Microcrystalline quartz (SiO2)
Shale
Mudrock / Fissile Shale
Limestone
Calcium Carbonate (CaCO3)
Limestone (specifically Travertine or Tufa)
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (Sandstone)
Banded Jasper (Mookaite / Chert)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Fossil Coral
Tabulate Coral (potentially Favosites or Calapoecia)
Gastropod Steinkern (Internal Mold Fossil)
Gastropoda (Class); Internal mold or 'Steinkern' composed of Calcium Carbonate (CaCO3) or Sedimentary matrix
Conglomerate
Conglomerate (a clastic sedimentary rock)
Chert (Common Opal/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Sandstone
Sedimentary Rock (Quartz/Feldspar grains cemented together)
Fossiliferous Limestone with Brachiopod
Phylum Brachiopoda in calcitic matrix
Lepidodendron Fossil in Sandstone
Lepidodendron (Lycophytina, Lepidodendrales)
Agate
SiO2
Knightia Fossil in Limestone
Knightia eocaena in micritic limestone
Puddingstone (Gowganda)
Gowganda Formation Conglomerate
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Red Sandstone
Arenite (SiO2 with Fe2O3)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
Sandstone
Arenite (SiO2 based with various mineral cements)
Sandstone
Arenite (Siliclastic sedimentary rock), SiO2 + various minerals
Sandstone (with Iron Staining)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
Conglomerate (Puddingstone)
Conglomerate (specifically, clastic sedimentary rock)
Red sandstone
Quartz-rich sandstone, commonly ferruginous (Fe-oxide stained)
Chert (Jasper/Opaline variety)
Silicon Dioxide (SiO2)
Sandstone
Arenite
River Stone (Limestone)
Sedimentary Calcium Carbonate (CaCO3)
Gravel / Small Pebble
Rock Fragment (Gravel)