Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
Category
Browse sedimentary (biogenic) specimens identified by the Rock Identifier community.
Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
Chert (Limonite-stained)
Microcrystalline Quartz (SiO2) with iron oxides
Banded Sandstone (Liesegang Rings)
Arenite with Liesegang rings (SiO2/Fe2O3)
Sandstone Pebbles
Arenite (Sedimentary rock composed of sand-sized grains)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (primarily SiO2)
Sandstone (River Pebble)
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite with Iron Oxide staining (Fe2O3)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Sandstone
Arenite (primarily composed of SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (SiO2 primarily)
Glauconite (Sandstone or Shale)
Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite
Sandstone
Clastic Sedimentary Rock (composed of SiO2 grains)
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
Sandstone
Arenite (primarily SiO2)
Sandstone (likely Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Quartzose)
Arenite (SiO2 based)
Sandstone
Arenite (composed primarily of SiO2)
Crushed Limestone
Calcium Carbonate (CaCO3)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone
Arenite
Dalmation Stone
Dalmation Jasper (Igneous microcrystalline quartz with arfvedsonite)
Sandstone (with Iron Staining)
Arenite
Sandstone (Ferruginous)
Arenite (Fe2O3 rich)
Coarse Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (Clastic Sedimentary Rock)
Conglomerate
Conglomerate (Detrital sedimentary rock)
Limestone with Fossil Inclusion
Sedimentary Calcium Carbonate (CaCO3)
Sandstone (Pebble)
Arenite / Clastic Sedimentary Rock
Sandstone
Sandstone (clastic sedimentary rock)
Limonite Concretion
FeO(OH)·nH2O (Hydrated Iron Oxide)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)