Sodalite
Na4Al3(SiO4)3Cl (Sodium Aluminum Silicate Chloride)
mineral
Category
Mineral Specimen
Browse mineral specimen specimens identified by the Rock Identifier community.
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Chrysoprase-bearing Quartz
Silicon Dioxide with Nickel Inclusions (SiO2)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Amazonite
Microcline (KAlSi3O8) with Pb impurities
mineral
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Sunstone
Oligoclase (Plagioclase Feldspar), (Ca,Na)(Al,Si)4O8
mineral
Amethyst
Quartz (Silicon Dioxide with Iron impurities), SiO2
mineral
Polished black tourmaline (schorl), likely a carved or polished specimen
Schorl, NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Peridot in Matrix
Olivine ((Mg,Fe)2SiO4)
mineral
Granite with Tourmaline
Felsic intrusive igneous rock containing schorl (tourmaline)
igneous
Blue Apatite
Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Beryl (likely Emerald or Aquamarine in matrix)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Granite Pebble
Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)
igneous
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Unidentified pale mineral fragment
Likely quartz or calcite; image resolution prevents confident identification
mineral
Quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Carved Mottled Greenish-Yellow Crystal/Glass Object
Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.
Man-made Object/Uncertain Mineral
Raw Topaz (or Smoky Quartz)
Al2SiO4(F,OH)2 / Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Ferruginous Quartz
Ferruginous Quartz (Silicon Dioxide + Iron Oxide, SiO2 + Fe2O3)
mineral
Chalcedony with Druzy Quartz Geode
Silicon Dioxide (SiO2)
mineral
Prehnite
Ca2Al(AlSi3O10)(OH)2
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Quartz (Silicon Dioxide, SiO2)
mineral
Milky quartz-bearing rock, possibly quartzite
Quartz (SiO₂), likely in a quartzite or quartz-rich metamorphic matrix
metamorphic
Green Tourmaline (Verdelite) / Actinolite
Tourmaline group: Na(Mg,Fe,Li,Al,Mn)3Al6(BO3)3Si6O18(OH)4 / Actinolite: Ca2(Mg,Fe)5Si8O22(OH)2
mineral
Quartz with Sericite and Cinnabar
Silicon Dioxide (SiO2) with muscovite/sericite and mercury sulfide (HgS)
mineral
Chrysotile Asbestos
Mg3Si2O5(OH)4
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Gold Nugget / Placer Gold
Native Gold (Au)
mineral
Amethyst
Amethyst (Silicon Dioxide with iron impurities), SiO2
mineral
Chalcopyrite on Quartz
CuFeS2 (Chalcopyrite) with SiO2 (Quartz)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Blue Lace Agate
Silicon Dioxide (Chalcedony variety), SiO2
gemstone
Quartz with Tourmaline
Silicon Dioxide (SiO2) with complex cyclosilicate inclusions
mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Tiger's Eye
Silicon Dioxide (Quartz pseudomorph after crocidolite)
gemstone