Fossiliferous Sandstone / Fossil Fragment
Fossiliferous Sedimentary Matrix with Indeterminate Fossil Material
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Fossiliferous Sandstone / Fossil Fragment
Fossiliferous Sedimentary Matrix with Indeterminate Fossil Material
Limonite Concretion
Limonite (Hydrated iron(III) oxide-hydroxide) FeO(OH)·nH2O
Pyrite
Iron Sulfide (FeS2)
Jasper (Chert / Chalcedony)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Jasper
Silicon dioxide (Microcrystalline Quartz, SiO2)
Sedimentary Breccia
Breccia (Clastic Sedimentary Rock)
Sedimentary Breccia
Clastic Breccia (CaCO3/SiO2 matrix)
Chert / Flint Arrowheads
Cryptocrystalline Quartz (SiO2)
Pyrite
Iron Disulfide (FeS2)
Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)
Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)
Chert
Silicon dioxide (SiO2)
Coal (Bituminous or Anthracite)
Carbonaceous Sedimentary Rock
Sandstone
Arenite
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (primarily Quartz-based Sandstone)
Sandstone (with Feldspathic/Arkose qualities)
Arenite (primarily SiO2 with KAlSi3O8 components)
Red Sandstone
Arenite (primarily Quartz with Iron Oxide coating)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (Quartz-rich)
Arenite (Quartz Arenite)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Light-colored limestone (probable fossiliferous or micritic limestone)
Calcite-rich carbonate rock; predominantly CaCO₃ (calcite)
Chert (Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
Sandstone
Arenite (primarily Quartz Arenite)
Sandstone
Arenite (primarily SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
Chert (Jasper)
Silicon Dioxide (SiO2)
Banded Sandstone
Clastic Sandstone (SiO2 with iron oxides)
Sandstone
Arenite (SiO2 primarily)
Quartz-veined Sandstone Pebble
Quartzose Sandstone with Quartz Veinlets
Banded Sandstone (River Pebble)
Arenite (SiO2 primarily)
Weathered sandstone or arkosic sandstone
Clastic sandstone, likely quartz–feldspar-rich (arkose)
Flesh-toned Siltstone
Siltstone (composed of microscopic Quartz and Feldspar grains)
Calligraphy Stone
Mariam Jasper (Fossiliferous Limestone composed of Hematite and Shell remains)