Limestone (specifically Crushed Limestone/Calcictic)
Calcium Carbonate (CaCO3)
Category
Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.
Limestone (specifically Crushed Limestone/Calcictic)
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone (specifically Fossiliferous Limestone)
Calcium Carbonate (CaCO3)
Sandstone with Iron Oxide (Limonite/Hematite)
Ferruginous Sandstone (SiO2 with FeO(OH)·nH2O)
Chalcedony (specifically Agate or Common Opal variety)
Cryptocrystalline Silica (SiO2)
Zebra Jasper
Tumbled Opaque Chalcedony (SiO2)
Red Sandstone
Clastic Sedimentary Mineraloid (predominantly Quartz grains with Iron Oxide cement)
Goldstone (Brown/Gold variety)
Aventurine Glass (SiO2 with Copper inclusions)
Ferruginous Sandstone with Quartz Inclusions
Clastic Sedimentary Rock (Iron-rich Sandstone)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Weathered Sandstone with Algae Growth
Arenite
Limestone
Calcium Carbonate (CaCO3)
Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
Limestone (Buff/Tan)
Calcium Carbonate (CaCO3)
Botryoidal Chalcedony with Calcite
Chalcedony (SiO2 with accessory minerals, likely CaCO3)
Rose Quartz Carving
Quartum roseum (Variety of Quartz, SiO2)
Porphyritic Basalt or Diabase with Plagioclase Phenocrysts
Porphyritic Basalt or Diabase; Mineral: Plagioclase Feldspar
Pyrite
Iron Disulfide (FeS2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Pyrite
Iron Disulfide (FeS2)
Chert (Quartz)
Microcrystalline Silica (SiO2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)
Quartzite Pebble
Metamorphic Quartz (SiO2)
Peridot and Citrine Gemstones (in a ring setting)
Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Water-worn Pebble)
Clastic sedimentary rock (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (SiO2 with FeO/Fe2O3)
Sandstone with Foliose Lichen
Arenite (Rock matrix) with Xanthoparmelia or Flavoparmelia (Lichen genus)
Diamond (in Matrix)
Carbon (C)
Quartz on Sandstone
Silicon Dioxide (SiO2) in Lithic Sandstone
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Greywacke/Lithic Sandstone)
Arenite (composed primarily of SiO2)
Sandstone
Sandstone (clastic sedimentary rock), primarily SiO2
Limonitic Sandstone (Stained Sandstone)
Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining
Limestone
Calcium Carbonate (CaCO3)
Diamond
Diamond (pure Carbon, C)
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
Basalt with Plagioclase Phenocrysts
Porphyritic Basalt