Sodalite
Sodalite Na8(Al6Si6O24)Cl2
mineral
Category
Mineral (Biogenic)
Browse mineral (biogenic) specimens identified by the Rock Identifier community.
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Quartz Geode
Crystalline Silver Oxide (SiO2) in Calcareous Host
mineral
Peacock Ore (Bornite or Chalcopyrite)
Bornite (Cu₅FeS₄) or iridescent Chalcopyrite (CuFeS₂)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Chlorite/Epidote inclusions
Silicon Dioxide (SiO2) with phyllosilicate/sorosilicate inclusions
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Andesite Porphyry (Geological Drill Core)
Andesite Porphyry
igneous
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Quartz-bearing Ore (likely Gold-bearing Quartz)
Quartz (SiO2) with potential sulfide mineralization (Pyrite/Arsenopyrite)
mineral/hydrothermal
Garnet (Almandine/Pyrope series)
Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)
mineral
Sandstone
Sandstone (Silicon Dioxide, SiO2)
sedimentary
Dyed Howlite (simulating Lavender/Purple Jade or Charoite)
Howlite: Ca2B5SiO9(OH)5 (when natural)
Mineral
Gabbro (likely with Pyrite/Sulfide mineralization)
Mafic Intrusive Igneous Rock
igneous
Vesicular Basalt with Calcification
Vesicular Basalt (Aphanitic extrusive igneous rock)
igneous
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
This appears to be a man-made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen.
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Fossilized Dinosaur Skull (Tyrannosaurus rex)
Tyrannosaurus rex (permineralized fossil), rich in Hydroxylapatite/Silica
sedimentary
Dinosaur Fossil (Tyrannosaurus rex skull replica/specimen)
Tyrannosaurus rex (fossilized in permineralized sedimentary matrix)
sedimentary
Fossilized Shark Tooth
Fossilized elasmobranch tooth (Apatite/Calcium Phosphate)
sedimentary
Chrysocolla in Matrix
Hydrated copper silicate - (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Conglomerate
Conglomerate (a clastic sedimentary rock)
Sedimentary Rock
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Fossil Coral
Fossilized Scleractinia or Tabulata (various genera/species)
Sedimentary
Greenschist
Greenschist (containing Chlorite, Epidote, and Actinolite)
metamorphic
Quartz with Chalcopyrite
Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)
mineral
Fossil Shark Tooth
Otodus sp. or Carcharocles sp. (likely fossilized Chondrichthyes)
fossil
Schist
Schist
Metamorphic
Sandstone (likely Arkosic or Quartzose)
Arenite (SiO2 based with mineral inclusions)
sedimentary
Quartz with mica and feldspar (Pegmatite fragment)
Granitic Pegmatite (composed mainly of SiO2 with KAlSi3O8)
igneous
Fossilized Shark Tooth
Carcharocles sp. or similar (Fossilized Fluorapatite)
sedimentary
Olivine (Peridot when gem-quality)
Olivine Group (Magnesium Iron Silicate, (Mg,Fe)2SiO4)
mineral
Schist
Schist
metamorphic
Milky Quartz with inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Fossilized Shark Tooth (Otodus)
Otodus obliquus
fossil
Pyrite and Fluorite on Quartz (Matrix Specimen)
Iron Disulfide (FeS2) and Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)
mineral
Fluorite (Purple variety)
Calcium Fluoride (CaF2)
mineral
Baryte (Barite)
Barium sulfate (BaSO4)
mineral
Granite
Granite (Phaneritic igneous rock)
igneous
Blue Kyanite
Kyanite (Al2SiO5)
metamorphic
Granite
Granitoid (comprised of Quartz, Feldspar, and Mica)
igneous