Meteorite

Weathered iron-rich rock fragment

Indeterminate; likely limonite/goethite-bearing sandstone or laterite

Iron-oxide-bearing rock fragment

Likely limonite/goethite with quartz or host-rock inclusions; exact identification requires testing

Possible iron-rich basalt or industrial slag

Basalt, likely Fe–Mg silicate rock; exact identification is uncertain from the blurred image

Iron-stained weathered stone (tentative)

Undetermined; possibly weathered iron-rich basalt or concretion

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Olivine in Quartz/Feldspar Matrix (Peridotite or Granitic Pegmatite)

(Mg,Fe)2SiO4 (Olivine) with Quartz / Feldspar

Siderite Concretion

Ironstone (Siderite) Concretion, FeCO3

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

Olivine (Peridotite / Dunite Pebble)

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

Olivine in Basalt (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)

Olivine in Basalt

Peridotite / Forsterite ((Mg,Fe)2SiO4)

Tektite (Indochinite)

Tektite (High-silica natural glass)

Likely basalt or dark volcanic rock

Fine-grained mafic igneous rock, probably basalt; exact identification requires testing

Possible iron-rich pebble or weathered basalt

Indeterminate; likely iron-stained mafic rock, possibly basalt

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

Likely tektite (impact glass), possibly Muong Nong-type indochinite

Natural impact glass; silica-rich glass, typically ~70–80% SiO₂

Ironstone / limonitic iron-rich rock

Goethite–hematite–limonite aggregate, commonly an ironstone concretion

Weathered iron-rich rock fragment

Indeterminate; likely basaltic or mafic rock with iron-oxide staining

Vesicular basalt (weathered lava rock)

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

Native Gold Flake

Gold (Au)

Peridot (Olivine)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Olivine (Peridot)

(Mg,Fe)2SiO4

Peridot

Olivine ((Mg,Fe)2SiO4)

Olivine (Peridot when gem-quality)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Iron Concretion

Iron oxide concretion (Hematite or Goethite)

Likely weathered basalt or dark volcanic rock

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

Slag (Industrial Byproduct)

Anthropogenic Vitreous Silicate material

Peridot (Olivine)

Olivine, (Mg, Fe)2SiO4

Moissanite

Silicon Carbide (SiC)

Olivine (Peridot when gem-quality)

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

Charnockite

Orthopyroxene-bearing granite (Charnockite)

Tektite (Indochinite)

Tektite (impactite), primarily high-silica glass (SiO2)

Tektite

Tektite (Amorphous silica rich glass)

Weathered micaceous metamorphic rock, likely schist or phyllite

Quartz–mica schist/phyllite; commonly quartz, muscovite/biotite, and feldspar

Tektite (likely indochinite)

Natural silica-rich impact glass; predominantly amorphous SiO₂ with aluminum, iron, magnesium, calcium, and sodium

Weathered quartz-rich pebble

Likely quartz-bearing granitoid or quartz vein fragment; exact identification requires testing

Brecciated polymictic rock, possibly impact breccia

Polymictic breccia; exact lithology indeterminate from image

Moldavite

Tektite (Silica Glass - SiO2 + Al2O3, FeO, MgO, CaO, Na2O, K2O)

Lunar Highlands Breccia (Meteorite)

Lunar Feldspathic Breccia

Olivine (Peridot)

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