Orange Calcite
Calcium Carbonate (CaCO3)
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Orange Calcite
Calcium Carbonate (CaCO3)
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
Quartz
SiO₂ (Silicon Dioxide)
Quartz
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Agate Geode
Silicon Dioxide (SiO2) - Chalcedony / Quartz Variety
Carnelian
Carnelian Chalcedony (SiO2 with iron oxide impurities)
Quartz (specifically Clear Quartz or Rock Crystal)
Silicon Dioxide (SiO2)
Banded Agate
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Azurite-Malachite (often called Azerite Malachite or Azurmalachite)
Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Turquoise (Dyed Howlite/Magnesite imitation)
CuAl6(PO4)4(OH)8·4H2O (Target mineral) / Ca2B5SiO9(OH)5 (Actual specimen: Howlite)
Quartz Vein in Sandstone
Sandstone with Hydrothermal Quartz (SiO2)
Chalcedony
Chalcedony (SiO2)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Sandstone
Arenite
Granite Pebble
Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)
Pyrite
Iron Pyrite (FeS2)
Quartz Pebble
Silicon Dioxide (SiO2)
Basalt (with Iron Staining)
Mafic Igneous Rock
Sandstone
Arenite (CaCO3/SiO2 cemented quartz)
Diamond (Cut Specimen)
Carbon (C)
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Hematite inclusions
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Orange Calcite point
Calcite (Calcium Carbonate, CaCO3)
Carnelian Agate
Carnelian (Chalcedony / Silicon Dioxide SiO2)
Sandstone
Arenite (SiO2 based typically)
Amethyst (Quartz)
Silicon Dioxide with Iron impurities (SiO2)
Rhodochrosite
Manganese carbonate (MnCO3)
Geode (unopened)
Calcedony-lined Geode (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Quartz Geode
Silicon Dioxide (SiO2)
Azurite
Azurite (Cu3(CO3)2(OH)2)
Rhodochrosite
Manganese Carbonate (MnCO3)
Peacock Ore (Bornite or Iridescent Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with oxidation
Ironstone Concretion / Limonite-stained Siltstone
Ironstone (primarily Limonite FeO(OH)·nH2O and Siltstone)
Basalt
Basalt (Mafic volcanic rock)
Sandstone (with banding)
Arenite (primarily SiO2)
Limonite (Iron Ore)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
Ferruginous Sandstone (Gozzanous)
SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions