Meteorite (Extraterrestrial Material)

Unidentified weathered mineral/rock fragment

Indeterminate; likely a weathered iron-rich silicate or sulfide-bearing specimen

Chondrite Meteorite

Ordinary Chondrite (Undifferentiated Meteorite)

Chondrite Meteorite

Stony Meteorite (L, H, or LL Chondrite)

Iron-rich meteorite candidate

Provisional: stony-iron or iron meteorite; exact classification requires testing

Chondrite meteorite

Stony chondrite; commonly ordinary chondrite (H, L, or LL group), composed mainly of olivine and low-calcium pyroxene with Fe–Ni metal and troilite

Iron-rich meteorite candidate

Unconfirmed stony-iron or iron meteorite; possible weathered ordinary chondrite

Likely iron meteorite (stony-iron or weathered iron-rich meteorite)

Provisional identification: meteoritic Fe–Ni alloy, mainly kamacite/taenite; exact classification requires chemical and petrographic testing

Iron meteorite (likely etched or weathered iron meteorite)

Fe–Ni alloy, predominantly kamacite and taenite; possible ataxite/hexahedrite or coarse octahedrite

Chondrite

Ordinary Chondrite (L or H group)

Iron-rich laterite or limonite/goethite specimen

Hydrated iron oxides/hydroxides, chiefly goethite (FeO(OH)) and limonite (variable FeO(OH)·nH₂O), possibly hematite (Fe₂O₃)

Small metallic-looking mineral/rock fragment

Indeterminate from image; possible pyrite-bearing sulfide rock or native-metal/meteorite fragment

Iron-rich meteorite candidate (possibly stony-iron or iron meteorite)

Unclassified meteoritic material; likely Fe–Ni metal with weathering oxides

Weathered iron-rich rock, possibly meteorite

Uncertain; likely goethite/hematite-rich material, with meteorite possibility

Likely raw garnet-bearing metamorphic rock

Garnet schist or garnet amphibolite; probable almandine garnet (Fe₃Al₂Si₃O₁₂)

Iron-rich meteorite candidate

Probable stony-iron or iron meteorite; exact classification requires testing

Iron meteorite candidate

Likely an iron-rich meteorite, possibly a weathered octahedrite (Fe–Ni alloy); identification is uncertain from the image alone

Iron meteorite (likely Sikhote-Alin–type or similar)

Fe–Ni metallic meteorite, commonly kamacite with taenite; exact classification requires laboratory testing

Dark rounded pebble

Likely basalt or fine-grained mafic volcanic rock

Likely iron meteorite fragment

Fe–Ni metallic meteorite, possibly an octahedrite (kamacite–taenite alloy)

Iron meteorite (probable)

Fe–Ni metallic meteorite, commonly kamacite/taenite

Iron meteorite fragment (probable)

Fe–Ni metallic meteorite, likely an octahedrite

Mica-rich granite or pegmatite fragment

Feldspar–quartz–mica rock, likely biotite granite or granitic pegmatite

Iron meteorite candidate

Fe–Ni metallic meteorite, possibly an ordinary octahedrite

Iron-rich meteorite candidate

Unclassified stony-iron or iron meteorite; requires testing

Possible iron-rich meteorite

Uncertain; likely an ordinary chondrite (stony meteorite), pending testing

Peridot (Olivine)

Olivine, (Mg,Fe)2SiO4

Likely basalt pebble

Basalt, a fine-grained mafic volcanic rock; commonly composed of plagioclase, pyroxene, and sometimes olivine

Possible iron meteorite

Metallic meteorite, likely Fe–Ni alloy (kamacite/taenite)

Iron meteorite (probable)

Fe–Ni alloy, mainly kamacite and taenite

Tektite (Indochinite)

Tektite (Amorphous Silica Glass)

Possible basalt or iron-rich slag-like geological specimen

Basalt (tentative); predominantly plagioclase and pyroxene, possibly with magnetite/iron oxides

Chondrite Meteorite

L or H Ordinary Chondrite

Iron Meteorite

Siderite (Iron-Nickel Meteorite)

Dark gray metamorphic rock fragment, likely slate or schist

Fine-grained foliated silicate rock; composition likely quartz, feldspar, mica, and/or chlorite

Iron-rich chert or jasper fragment

Microcrystalline quartz (SiO₂), colored by iron oxides/hydroxides

Ferrous Slag

Iron/Steel Slag (Complex Calcium-Alumino-Silicates)

Tektite (Indochinite)

Natural glass (High-silica impact glass)

Iron meteorite fragment (likely weathered meteorite)

Fe–Ni metal, commonly kamacite with taenite; possible stony-iron or iron-oxide fusion crust

Slag (Industrial Glass/Glassy Rock)

Anthropogenic Vitreous Material

Tektite (Indochinite)

Tektite (High-silica natural glass)

Iron Meteorite

Siderite (Iron-Nickel alloy)

Chondrite Meteorite

Ordinary Chondrite (L or H group)