Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Category
Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite)
Browse mineral like byproduct (often mistaken for igneous rock or meteorite) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite) in the encyclopedia
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Pallasite Meteorite
Pallasite (Iron-Nickel Matrix with Olivine/Peridot inclusions)
Mineral / Extraterrestrial Rock
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Meteorite
Chondrite / Iron-Nickel Meteorite
meteorite
Peridot (Olivine)
Olivine ((Mg, Fe)2SiO4)
mineral
Nephrite Jade (or Serpentine)
Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals
Mineral/Rock
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Iron Meteorite
Iron-nickel alloy (primarily kamacite and taenite)
Mineral/Rock (Extraterrestrial Origin)
Limonite Concretion (Goonie or Rattlestone)
Limonite (FeO(OH)·nH2O)
sedimentary
Sandstone Concretion
Sedimentary Concretion (Quartz sand bound by mineral cement)
sedimentary
Chalcanthite
Hydrated copper(II) sulfate (CuSO4·5H2O)
mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Iron Meteorite
Siderite (meteoritic iron, Fe-Ni alloy)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Chondrite Meteorite
Ordinary Chondrite (L or H Type)
igneous
Sandstone with Dendritic Manganese Oxides
Sandstone (SiO2 predominant) with Oxide Dendrites (MnO2)
sedimentary
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2 with mineral cement)
sedimentary
Iron-Nickel Meteorite (Possible Chondrite or Oxidized Iron)
Siderite (Nickel-Iron) or Chondrite (Si/Fe composite)
igneous
Scoria (Lava Rock)
Scoria
igneous
Scoria (Lava Rock)
Mafic extrusive volcanic rock (Scientific formula varies based on mineral content: primarily SiO2, MgO, and FeO)
igneous
Vesicular Basalt (Scoria)
Vesicular Basalt
igneous
Chert Concretion (Flint)
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble (with Manganese dendrites/staining)
Silicon Dioxide (SiO2) with Manganese Oxide impurities
mineral
Quartz (Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Green Slag Glass (Cullet)
Amorphous Silica (Industrial Glass Byproduct)
Synthetic/Byproduct (Non-igneous, non-sedimentary, non-metamorphic)
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) within Basalt (Rock)
igneous
Scoria (Lava Rock)
Scoria
igneous
Sandstone Concretion
Carbonate-cemented Sandstone Concretion
sedimentary
Fluorite (Fluor-spar)
Calcium Fluoride (CaF2)
mineral
Possible tektite or dark volcanic rock fragment
Uncertain; likely natural silicate glass (tektite) or basalt
mineral
Slag Glass (Cullet)
Amorphous Silica / Glass residue
Man-made byproduct (Non-geological)
Slag
industrial by-product
Fluorite (left), Sodalite (middle), Dumortierite/Tumbled Quartzite (right)
Calcium Fluoride (CaF2), Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2), Aluminum Borosilicate (Al7(BO3)(SiO4)3O3)
mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Pallasite Meteorite
Pallasite (Stony-iron meteorite; Fe-Ni alloy with (Mg,Fe)2SiO4 olivine)
Mineral/Extraterrestrial Rock
Green Quartz (Prasiolite or Aventurine)
Silicon Dioxide (SiO2)
mineral
Concretion
Septarian or Siderite Concretion
sedimentary
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Sodalite and Calcite
Na8(Al6Si6O24)Cl2 (Sodalite) and CaCO3 (Calcite)
mineral
Iron Meteorite
Siderite (Fe-Ni alloy, primarily Kamacite and Taenite)
igneous
Scoria (Lava Rock)
Vesicular Basalt / Scoria
igneous