Bauxite
Bauxite (mixture of Hydrous Aluminum Oxides)
Category
Browse mineral on igneous rock specimens identified by the Rock Identifier community.
Bauxite
Bauxite (mixture of Hydrous Aluminum Oxides)
Lapis Lazuli
Lapis Lazuli (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
Lapis Lazuli
Lazurite-dominant Metamorphic Rock (complex aluminosilicate)
Agatized Petrified Wood
Silicon Dioxide (SiO2) - Chalcedony pseudomorph after Wood
Sandstone
Sandstone (composed primarily of sand-sized minerals or rock grains)
Pyrite
Iron Sulfide (FeS2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone (likely Ferruginous)
Sandstone (SiO2 with iron oxides)
Shale
Shale (Sedimentary rock composed of mud/clay minerals)
Limestone Breccia
Sedimentary Breccia (Calcareous)
Basalt with Plagioclase Phenocrysts (Porphyritic Basalt)
Mafic volcanic rock (formula primarily (Mg, Fe)2SiO4 and CaAl2Si2O8)
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Granite
Phaneritic plutonic rock (SiO2 range 65-75%)
Orange Calcite
Calcium Carbonate (CaCO3)
Shale
Fissile Siliciclastic Sedimentary Rock
Muscovite Mica
KAl2(AlSi3O10)(F,OH)2
Pyrite
Iron Sulfide (FeS2)
Muscovite Mica
Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Quartz (worked as a tool or artifact)
Silicon Dioxide (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Green Calcite
Calcite (Calcium Carbonate, CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Pebble (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Quartz Crystal Point
Silicon Dioxide (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2
Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Quartz Geode
Quartz (Silicon Dioxide - SiO2) within a Chalcedony and Limonite shell
Pyrite
Iron Sulfide (FeS2)
Gold (Elemental Metal)
Gold (Au)
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Greywacke (River Pebble with Quartz Veins)
Greywacke (Indurated Sandstone); Veins: SiO2 (Quartz)
Orthoclase (Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
Peacock Ore
Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)
Sandstone Concretion
Sedimentary concretion
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Green Moonstone (Garnierite)
Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)
Sandstone
Arenite (primarily SiO2)
Pink Granite
Felsic Intrusive Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)
Granite
Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar, and Plagioclase)