Howlite
Howlite, Ca₂B₅SiO₉(OH)₅
mineral
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
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Corundum (Sapphire and Ruby)
Aluminum Oxide (Al2O3)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Blue Quartz
Quartz (SiO2) with inclusions
Mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Blue Quartzite (Dyed Quartzite)
Silicon Dioxide (SiO2) with dye
metamorphic
Green Obsidian Sphere (man-made glass)
Vitreous Silica with Chromium/Iron additives
mineralogical simulant
Pyrite (Iron Pyrite)
Iron Sulfide (FeS2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Yellow Sapphire
Corundum (Al2O3) with iron impurities
mineral
Ironstone Concretion
Ferruginous Siltstone/Ironstone (Fe2O3)
sedimentary
Tektite (likely Indochinite)
Tektite (high-silica impact glass)
igneous
Lunar Meteorite
Lunar Feldspathic Breccia
igneous
Sodalite (Dotted or Spotted Variety)
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Diorite
Phaneritic intermediate plutonic rock
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)
Mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Blue Sapphire
Corundum (Al2O3) with iron and titanium impurities
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Quartzite pebble
Quartzite (Silicon Dioxide, SiO2)
metamorphic
Iron meteorite (likely)
Fe–Ni metallic meteorite, commonly kamacite–taenite
meteorite
Chondrite Meteorite
Stony Meteorite (Chondrite)
igneous
Aventurine (likely Green Aventurine)
Aventurine (a variety of quartz, SiO₂, with common inclusions of fuchsite)
Mineral/Metamorphic Rock
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Blue-green fluorite crystal
Fluorite (calcium fluoride, CaF₂)
mineral
Chondrite Meteorite
L3 Chondrite (Unequilibrated Ordinary Chondrite)
igneous
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Ruby (Corundum)
Aluminum Oxide (Al2O3) with Chromium traces
mineral
Quartzite Pebble
Quartzite
metamorphic
Red Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of Quartz, SiO2)
metamorphic
Quartzite
Quartzite (mostly SiO2)
metamorphic