Limestone
Calcium Carbonate (CaCO3)
sedimentary
Category
Sedimentary Rock (Altered)
Browse sedimentary rock (altered) specimens identified by the Rock Identifier community.
Limonite-stained Chert/Jasper
Microcrystalline Quartz (SiO2) with Iron Oxides (FeO(OH)·nH2O)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Chert (Nodule)
Crystalline Silicon Dioxide (SiO2)
sedimentary
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite
sedimentary
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Red Jasper
Silicon Dioxide (SiO₂)
Sedimentary Rock (Cryptocrystalline Quartz)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite
sedimentary
Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Limestone with Bitumen/Chert
Calcite (CaCO3) containing organic hydrocarbons
sedimentary
Fossil Coral (Favosites)
Favosites (Order: Tabulata, Phylum: Cnidaria)
sedimentary
Banded Chert
Cryptocrystalline Quartz (SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
sedimentary
Banded Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone with Fossil inclusions
Fossiliferous Limestone (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (with Limonite staining)
Arenite (FeOx-rich)
sedimentary
Chert (specifically Jasper or Flint type)
Microcrystalline Quartz (SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (primarily Quartz SiO2)
sedimentary
Blue Kyanite
Kyanite (Al2SiO5)
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Ferruginous)
Arenite (with Goethite/Limonite cement)
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Garnet (Almandine)
Almandine, Fe3Al2Si3O12
mineral
Fossiliferous Limestone
Limestone (CaCO3 - Calcium Carbonate)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Carnelian
Carnelian (SiO2)
mineral
Chalcedony (Agate/Carnelian type)
Silicon Dioxide (SiO2)
mineral
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
mineral
Orpiment
Orpiment (As2S3)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary