Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Category
Browse sedimentary or igneous fragment specimens identified by the Rock Identifier community.
Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Crinoidal Limestone
Bioclastic Limestone
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
Magnetite
Magnetite (Fe3O4)
Magnetite (Octahedral Crystal)
Magnetite (Fe3O4)
Magnetite
Magnetite (Fe3O4)
Magnetite
Magnetite (Fe3O4)
Magnetite / Iron Ore
Magnetite (Fe3O4)
Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily Quartz and Feldspar)
Sandstone Pebble
Arenite (SiO2 with minor mineral cements)
Sandstone (Iron-stained)
Arenite (primarily SiO2 with Fe2O3 staining)
Sandstone (Quartzose)
Arenite (SiO2 based)
Limestone
Calcium Carbonate (CaCO3 - Calcite)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Fossilized Crinoid Stem in Limestone
Crinoidea (Class) in Calcium Carbonate (CaCO3) matrix
Sandstone
Sandstone (clastic sedimentary rock)
Chert
Chert (Microcrystalline Quartz, SiO2)
Sunstone
Aventurine Feldspar (Plagioclase or Oligoclase)
Sandstone (with Chert/Quartzite)
Arenite (SiO2 primarily)
Sandstone
Arenite (SiO2 based typically)
Brecciated Jasper
Silicon Dioxide (SiO2) with hematite and other mineral impurities
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
Graywacke
Lithic Sandstone (Graywacke)
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
Limestone
Limestone (CaCO3)
Fossiliferous Limestone
Limestone (Calcium Carbonate - CaCO3)
Quartz
Silicon Dioxide (SiO2)
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
Pyrite in Quartz Matrix
Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)
Milky Quartz
Silicon dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
Schist
Chlorite/Mica Schist
Mica Schist
Schist (Muscovite/Biotite Schist)
Bituminous Coal
Bituminous coal (Carbonaceous sedimentary rock)
Brecciated Jasper
Sedimentary Chalcedony (SiO2)
Red Sandstone
Sedimentary Clastic Rock (Quartz Arenite / Arkose)