Blue Apatite
Fluorapatite (Ca5(PO4)3F)
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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Green Quartzite (Tumbled)
Metamorphosed Quartz-rich Sandstone
metamorphic
Iron Meteorite (Campo del Cielo)
Iron Meteorite, Group IAB (FeNi Alloy: Kamacite and Taenite)
igneous
Gossanous Sandstone (likely Terrestrial)
Arenite with Iron-Oxide inclusions
sedimentary
Banded Sandstone
Arenite (with iron oxide banding)
sedimentary
Garnet (Pyrope-Almandine series)
Garnet Group, (Mg,Fe)3Al2Si3O12
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
![Arfvedsonite in Quartz (Arfvedsonite [Na3(Fe2+4Fe3+)Si8O22(OH)2] often hosted in Quartz or Feldspar) — igneous](https://media.rockidentification.com/5af4c6b0-6733-4f77-a6ae-987848327128-thumbnail.jpg)
Arfvedsonite in Quartz
Arfvedsonite [Na3(Fe2+4Fe3+)Si8O22(OH)2] often hosted in Quartz or Feldspar
igneous
Sandstone (likely River-tumbled Picture Sandstone)
Arenite (predominantly SiO2 with iron oxide impurities)
sedimentary
Iron Meteorite (Candidate)
Iron Meteorite (Siderite)
mineral
Olivine (Peridotite)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Dendritic sandstone
Sandstone with Manganese Oxide dendrites
sedimentary
Dendritic Agate (River Pebble)
Silicon Dioxide (SiO2) with Manganese or Iron oxide inclusions
mineral
Moldavite
Tektite (Natural Silicate Glass)
gemstone
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Limonite Concretion
Goethite-Limonite (FeO(OH)·nH2O)
sedimentary
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Ironstone Concretion
Siderite or Hematite-bonded Concretion
sedimentary
Sandstone Concretion
Sedimentary Concretion (Quartz sandstone with iron oxide cement)
sedimentary
Quartzite River Rock with Dendrites
Metamorphosed Quartz-rich Sandstone with Manganese Oxide (MnO2) inclusions
metamorphic
Weathered brown stone, likely basalt or iron-stained volcanic rock
Indeterminate; possibly vesicular basalt (mafic silicate rock)
igneous
Ironstone Concretion (Limonite/Goethite)
Ferruginous concretion (Fe2O3·nH2O)
sedimentary
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Silicon Carbide (Carborundum)
Silicon Carbide (SiC)
mineral
Peridot in Basalt
Olivine ((Mg, Fe)2SiO4) in Basalt
mineral
Sandstone Concretion
Septarian or Carbonate-cemented Sandstone Concretion
sedimentary
Olivine (Peridot)
Olivine Group (Mg,Fe)2SiO4
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Likely slag or metallic industrial byproduct
Unidentified iron-rich ferrous slag; possibly magnetite-bearing slag
mineral
Peridot (Olivine)
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
mineral
Concretion
Sedimentary Concretion (Ironstone / Calcite Concretion)
sedimentary
Sulfur (with Matrix)
Native Sulfur (S8)
mineral
Dendritic Agate (Tumbled)
Silicon Dioxide (SiO2) with inclusions
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Ferruginous Sandstone with Ironstone Concretion
Goethite-rich Sandstone (FeO(OH))
sedimentary
Dalmatian Jasper
Peralkaline Rhyolite (composed of Quartz, Feldspar, and Arfvedsonite)
igneous
Blue Slag Glass
Amorphous Silica (Industrial byproduct)
Antropogenic (Man-made glass byproduct)
Scoria with Calcite Infills
Vesicular Basalt with secondary Calcification (CaCO3)
igneous
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Auriferous Quartz or Pyritic Ore
Iron Pyrite (FeS2) or Native Gold (Au) in Matrix
mineral