Dumortierite Quartz (Blue Quartz)
Al7(BO3)(SiO4)3O3 / Quarz with Dumortierite inclusions
mineral
Category
Metamorphic Or Sedimentary Depending On Local Grade
Browse metamorphic or sedimentary depending on local grade specimens identified by the Rock Identifier community.
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Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Orthoclase Feldspar
KAlSi3O8 (Potassium aluminum silicate)
mineral
Chalcopyrite (Peacock Ore)
Copper Iron Sulfide (CuFeS2)
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Sandstone (likely Quartzite-grade)
Arenite (primarily SiO2)
sedimentary
Jadeite Jade
Sodium Aluminum Silicate (NaAlSi2O6)
metamorphic
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Chrysocolla (on host rock)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Copper silicate)
mineral
Dyed Agate Slice
Silicon Dioxide (SiO2) with artificial colorants
Mineral (variety of Chalcedony)
Ferruginous Sandstone
Arenite with Iron-Oxide cement (Fe2O3 · nH2O)
sedimentary
Granite or Granitic Gneiss River Rock
Granite / Gneiss
Igneous or Metamorphic
Green Tourmaline
Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)
mineral
Sandstone (Wonderstone)
Arenite (composed primarily of SiO2 with Fe2O3 impurities)
sedimentary
Red Sandstone (Iron-rich)
Arenite (with Hematite cement)
sedimentary
Breccia
Clastic Breccia
sedimentary
Spinosaurus fossil (permineralized bone)
Spinosaurus aegyptiacus (Calcium phosphate mineralized with silica/sediment)
sedimentary
Breccia
Clastic Breccia (SiO2/CaCO3 dominated)
sedimentary
Rough Green Tourmaline (Verdelite)
Elbaite (Complex Silicate) - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
mineral
Jadeite (Jade)
Jadeite, NaAlSi₂O₆
metamorphic
Banded Chert
Chert (a microcrystalline variety of quartz, SiO2 with minor impurities)
Sedimentary
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Peach Moonstone
Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)
mineral
Smoky Quartz
SiO2 (Silicon Dioxide)
mineral
Lapis Lazuli
Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Orange Quartzite (or Iron-Stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide impurities (Fe2O3)
metamorphic
Anthracite
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Eclogite
Eclogite
metamorphic
Nephrite Jade
Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Tiger's Eye
Pseudomorph of Chalcedony (SiO2) after Crocidolite
metamorphic
Nephrite Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
White Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Lapis Lazuli
Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)
metamorphic
Unakite
Epidotized Granite
metamorphic
Nephrite Jade
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Tiffany Stone
Bertrandite Fluorite (CaF2 + Be4Si2O7(OH)2)
metamorphic