Olivine/Peridot
Magnesium Iron Silicate (Mg,Fe)2SiO4
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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Blue Apatite
Fluorapatite / Apatite Group (Ca5(PO4)3(F,Cl,OH))
mineral
Vesicular Basalt
Extrusive Mafic Igneous Rock (Vesicular Basalt)
igneous
Blue Slag Glass
Ferro-silicate glass (Slag)
igneous (man-made/industrial)
Iron-rich meteorite candidate
Unclassified stony-iron or iron meteorite; possible weathered ordinary chondrite
meteorite
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (SiO2) with metallic oxide impurities
mineraloid
Lunar Breccia Meteorite
Lunar Feldspathic Breccia
igneous
Black Diamond / Black Sapphire
Carbon (C) or Corundum (Al2O3)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Sodalite
Sodalite - Na8(Al6Si6O24)Cl2
mineral
Likely weathered iron-rich rock or slag fragment
Indeterminate; possibly limonite/goethite-bearing rock (FeO(OH)·nH₂O) or industrial iron slag
mineral
Olivine (Peridot Stone)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
mineral
Slag Glass
Amorphous Silica Glass (with metal oxide inclusions)
Mineraloid / Industrial Waste
Quartzite
Quartzite (SiO2)
metamorphic
Sodalite
Sodalite - Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Olivine
Magnesium Iron Silicate ((Mg, Fe)₂SiO₄)
mineral
Tumbled tektite (likely Indonesian or Philippine tektite)
Natural silica-rich impact glass; chiefly SiO₂ with minor Al₂O₃, FeO, MgO, CaO, and Na₂O
meteorite
Blue Apatite
Fluorapatite / Apatite Group Ca5(PO4)3(F,Cl,OH)
mineral
Olivine (in Peridotite/Dunite form)
Magnesium Iron Silicate (Mg,Fe)2SiO4
igneous
Ironstone (Limonite/Goethite Concretion)
Ferruginous Sedimentary Rock (composed of Goethite FeO(OH) and Limonite)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Mineraloid
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Peridot (Olivine)
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Olivine (Peridotite)
Magnesium iron silicate ((Mg, Fe)2SiO4)
igneous
Tumbled blue sodalite (probable)
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
mineral
Quartzite
Quartzite (principally SiO2)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Man-made rock-like material
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Bronzite
Enstatite (magnesium iron silicate), (Mg,Fe2+)SiO3
mineral
Blue sodalite beads
Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂
mineral
Slag Glass (Cullet)
Amorphous Silica / Glass residue
Man-made byproduct (Non-geological)