Meteorite (Extraterrestrial Material)

Slag

Anthropogenic Vitreous Silica/Iron oxides

Likely iron meteorite fragment

Iron–nickel alloy, chiefly kamacite and taenite (Fe-Ni)

Libyan Desert Glass

Impactite (vitreous silica), SiO2

Tektite (Indochinite)

Tektite (Natural silica glass)

Chondrite Meteorite

Stony Meteorite (Ordinary Chondrite)

Chondrite Meteorite

Stony Meteorite (Ordinary Chondrite)

Chondrite Meteorite

Ordinary Chondrite (L or H Type)

Chondrite Meteorite

Ordinary Chondrite (Undifferentiated Stony Meteorite)

Hematite pseudomorph after a fossil or mineralized object (likely iron-oxide concretion)

Hematite, Fe₂O₃, possibly limonite/goethite-bearing

Asphalt fragment

Bituminous concrete

Vesicular basalt (likely weathered lava rock)

Basalt, predominantly calcium-rich plagioclase, pyroxene, and commonly olivine; vesicular texture from gas bubbles

Likely weathered basalt or iron-rich volcanic rock

Basalt; primarily plagioclase feldspar, pyroxene, and possibly olivine with iron-oxide alteration

Chondrite Meteorite

Ordinary Chondrite (S-type asteroid origin)

Black-and-white bicolored pebble

Likely basalt with a pale felsic or carbonate coating/inclusion; exact identification requires testing

Tumbled basalt (vesicular volcanic stone)

Basalt, a fine-grained mafic volcanic rock composed chiefly of plagioclase feldspar and pyroxene, with possible olivine and iron oxides

Dark mafic rock, likely basalt

Basalt; chiefly plagioclase feldspar, pyroxene, and commonly olivine or iron-titanium oxides

Likely iron-rich rock or weathered hematite

Hematite (Fe₂O₃), possibly limonite/goethite-rich material

Polished tektite (likely indochinite)

Impact glass; natural silica-rich glass, approximately SiO₂ 70–80%

Likely weathered iron-rich stone or concretion

Indeterminate; possibly ferruginous sandstone, ironstone, or a weathered sedimentary concretion

Brown weathered river pebble

Indeterminate lithology; likely ferruginous sandstone, mudstone, or weathered volcanic rock

Raw dark metamorphic rock, likely schist or slate

Mica schist or phyllite; commonly quartz–mica–chlorite aggregate

Pisolithic limonite/goethite pebble (ironstone)

Hydrated iron oxides, chiefly goethite (α-FeO(OH)) and limonite (FeO(OH)·nH₂O)

Probable rough basalt or mafic igneous fragment

Fine-grained basalt, likely plagioclase–pyroxene–olivine aggregate

Peridot (Olivine)

Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)

Tektite (Indochinite)

Tektite (High-silica natural glass)

Weathered iron-rich sandstone or lateritic rock

Ferruginous sandstone, primarily quartz (SiO₂) with iron oxides such as hematite/goethite

Stony Meteorite (Chondrite)

Ordinary Chondrite (L or H type)

Likely weathered basalt or dark volcanic rock

Basalt; primarily plagioclase feldspar and pyroxene, with possible olivine and iron oxides

Slag

Ferrous Slag (Siliceous industrial waste)

Blue glass-like bead or gemstone keychain ornament

Indeterminate; likely cobalt-blue glass or synthetic blue spinel, not identifiable as a natural mineral from the image

Metallic iron meteorite fragments (probable)

Iron meteorite, chiefly kamacite (α-(Fe,Ni)) with possible taenite

Polished pallasite meteorite

Pallasite: olivine (Mg,Fe)₂SiO₄ in an Fe–Ni metal matrix

Dark, vesicular volcanic rock (likely basaltic scoria)

Scoria; fine-grained basaltic rock composed chiefly of plagioclase, pyroxene, and possibly olivine

Iron Slag

Ferrous slag (primarily silicates and oxides of calcium, iron, and magnesium)

Weathered sandstone pebble

Quartz-rich sandstone, likely ferruginous sandstone

Moon (lunar surface depiction)

Lunar rock; chiefly anorthosite, basalt, and breccia (plagioclase-rich CaAl2Si2O8)

Rounded brown pebble, likely weathered sandstone or iron-stained quartzite

Probable quartz-rich sandstone (SiO₂-dominated); exact identification requires testing

Weathered iron-rich rock (likely basalt or ironstone)

Probable altered basalt; exact identification requires testing

Brecciated polymictic rock, possibly impact breccia

Polymictic breccia; exact lithology indeterminate from image

Vesicular basalt (scoriaceous basalt) with secondary minerals

Basalt, predominantly plagioclase–pyroxene–olivine; surface cavities may contain zeolites or calcite

Weathered iron-rich rock, possibly basalt or ironstone

Likely vesicular basalt or ferruginous breccia; exact identification requires testing

Iron Slag

Iron Slag (Industrial Vitreous Material)