Fulgurite
Fulgurite (Lechatelierite / Vitreous Silica)
mineral
Category
Meteorite (Extraterrestrial Material)
Browse meteorite (extraterrestrial material) specimens identified by the Rock Identifier community.
Sandstone Concretion
Ferruginous Sandstone Concretion
sedimentary
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Chondrite Meteorite Fragment
Ordinary Chondrite (L or H type)
igneous
Olivine/Peridot
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Chondrite Meteorite
Stone Meteorite (Chondrite)
meteorite
Olivine (Peridotite / Dunite Pebble)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
mineral
Slag (Industrial Glassy Byproduct)
Anthropogenic silicate byproduct (Slag)
Mineral-like byproduct (often mistaken for igneous rock or meteorite)
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Tektite (Indochinite)
Tektite (SiO2 + Al2O3, Glassy Melts)
igneous
Olivine (in Peridotite/Dunite form)
Magnesium Iron Silicate (Mg,Fe)2SiO4
igneous
Ironstone concretion
Siderite or Limonite concretion (FeCO3 or FeO(OH)·nH2O)
sedimentary
Olivine (Peridot)
(Mg,Fe)2SiO4
mineral
Chondrite Meteorite
Ordinary Chondrite (OC)
igneous
Olivine in Quartz/Feldspar Matrix (Peridotite or Granitic Pegmatite)
(Mg,Fe)2SiO4 (Olivine) with Quartz / Feldspar
igneous
Chondrite Meteorite
Undifferentiated Chondrite
meteorite
Weathered iron-rich rock, possibly laterite or limonite-bearing sandstone
Laterite/limonite-rich material; commonly dominated by goethite (FeO(OH)) and hydrated iron oxides
sedimentary
Tektite
Natural impact glass
meteorite
Olivine (Peridotite)
Magnesium Iron Silicate - (Mg, Fe)2SiO4
igneous
Olivine (Peridotite)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Slag
Anthropogenic Vitrification Product / Silicate Slag
Anthropogenic (Man-made industrial byproduct)
Olivine in Basalt matrix
Peridotite (Mg, Fe)2SiO4
igneous
Ironstone Concretion (Limonite/Hematite Nodules)
Ironstone (principally Limonite FeO(OH)·nH2O or Hematite Fe2O3 mixed with silica/clay)
sedimentary
Peridot (Olivine)
Olivine, (Mg, Fe)2SiO4
mineral
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)
igneous
Chondrite Meteorite
L3 Chondrite (Unequilibrated Ordinary Chondrite)
igneous
Olivine (Peridot when gem-quality)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Iron Meteorite
Iron-Nickel Meteorite (primarily composed of kamacite and taenite alloys)
Mineral
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Bronzite
(Mg,Fe)SiO3
Mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Possible tektite or iron-rich slag-like natural specimen
Uncertain; possibly natural glass (tektite) or magnetite-rich rock
mineral
Goethite / Limonite Concretion
Iron Hydroxide Oxide (FeO(OH))
sedimentary
Likely polished basalt with pale mineral inclusions
Basalt; inclusions possibly calcite, quartz, or weathered feldspar
igneous
Olivine (Peridotite)
Magnesium iron silicate (Mg, Fe)2SiO4
igneous
Peridot (Olivine)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Silicon Carbide (Carborundum)
Silicon Carbide, SiC
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Mineral
Sandstone with Ironstone Concretion
Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))
sedimentary
Olivine Peridotite
Peridotite (comprising Olivine (Mg,Fe)2SiO4 and Pyroxene)
igneous