Pyrite (on Quartz matrix)
Iron Disulfide (FeS2)
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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Olivine (Peridot Stone)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
mineral
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Scoria
Vesicular Basalt / Scoriaceous Basalt
igneous
Chondrite Meteorite
Ordinary Chondrite (L or H type)
igneous
Black Diamond / Black Sapphire
Carbon (C) or Corundum (Al2O3)
mineral
Chondrite Meteorite
Stony Meteorite (Ordinary Chondrite)
igneous
Chondrite Meteorite
Stony Meteorite (L, H, or LL Chondrite)
igneous
Concrete / Conglomerate (Man-made)
Artificial Conglomerate (Cementitious Composite)
sedimentary
Chondrite Meteorite
L or H type Ordinary Chondrite
igneous
Olivine (Peridot)
Olivine (Magnesium Iron Silicate, (Mg,Fe)2SiO4)
mineral
Serpentine
Serpentine (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Mineral
Olivine (Peridotite)
Magnesium iron silicate ((Mg, Fe)2SiO4)
igneous
Iron-Nickel Meteorite
Siderite (Meteoric Iron-Nickel alloy)
igneous
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Olivine (Peridotite / Dunite Pebble)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
mineral
Iron-Nickel Meteorite fragment
Siderite (meteoritic iron), composed primarily of Kamacite (α-(Fe,Ni)) and Taenite (γ-(Fe,Ni))
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Scoria (Basaltic Lava Rock)
Vesicular Basalt
igneous
Peridot
Olivine ((Mg,Fe)2SiO4)
gemstone
Lunar Meteorite
Lunar Feldspathic Breccia
igneous
Sulfur
Native Sulfur (S)
mineral
Sulfur (with possible Cullet Glass or Slag imitation)
Native Sulfur (S8)
mineral
Fossilized Brachiopod
Brachiopoda (Phylum)
fossil
Arsenopyrite in Quartz Matrix
Arsenopyrite (FeAsS) with Quartz (SiO2)
Mineral in a Metamorphic/Hydrothermal rock
Shatter Cone (Impactite)
Shock-metamorphosed rock
metamorphic
Serpentine
Antigorite/Lizardite (Mg,Fe)3Si2O5(OH)4
metamorphic
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Boxwork Siderite or Sepatarian Nodule Weathering
Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment
sedimentary
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Moldavite
Tektite (Amorphous Silica, SiO2 + Al2O3)
mineral
Possible basaltic rock or meteorite candidate
Likely vesicular basalt; meteorite identification cannot be confirmed visually
igneous
Weathered porphyritic basalt
Basalt, likely plagioclase-phyric basalt; primarily a fine-grained aggregate of plagioclase feldspar, clinopyroxene, and possibly olivine or iron-titanium oxides
igneous
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Chondrite Meteorite
Ordinary Chondrite (S-type asteroid origin)
igneous
Tektite (Indochinite)
Tektite (SiO2 + Al2O3, Glassy Melts)
igneous
Goldstone and pink quartz bead strands
Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible
mineral
Sandstone with Iron Concretion
Arenite with Limonite/Goethite Concretion
sedimentary
Tektite (Indochinite)
Tektite (Silica-rich natural glass)
mineral
Yellow or Honey Quartz
Silicon Dioxide (SiO2)
mineral