Schorl (Black Tourmaline)
NaFe3Al6(BO3)3Si6O18(OH)4 (Sodium Iron Aluminum Borosilicate)
Category
Browse metamorphic (localized) or sedimentary specimens identified by the Rock Identifier community.
Schorl (Black Tourmaline)
NaFe3Al6(BO3)3Si6O18(OH)4 (Sodium Iron Aluminum Borosilicate)
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
Tourmaline (Multi-colored)
Complex Borosilicate (Na,Ca)(Li,Mg,Al,Fe)3Al6(BO3)3Si6O18(OH)4
Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with trace Iron (Fe)
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
Mica in Quartz Host
Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(F,OH)2
Milky Quartz
Silicon Dioxide (SiO2)
Garnet and Quartz
Pyrope or Almandine (Red Garnets) and Quartz (Center Stone)
Morganite (Pink Beryl)
Beryllium aluminum silicate Be3Al2(SiO3)6
Smoky Quartz
Silicon Dioxide (SiO2)
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
Nephrite Jade
Tremolite-actinolite series (Ca2(Mg,Fe)5Si8O22(OH)2)
Rose Quartz
Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese
Fuchsite
Chrome-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]
Muscovite Mica
Muscovite: KAl2(AlSi3O10)(OH)2
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Green Tourmaline
Elbaite (part of Tourmaline group), Na(Li1.5Al1.5)Al6Si6O18(BO3)3(OH)4
Quartzite
Quartzite (primarily SiO2)
Schist (Micaceous)
Mica Schist (predominantly Muscovite or Biotite)
Sapphirine in Matrix
Sapphirine (Mg,Al)8(Al,Si)6O20
Epidote with quartz/feldspar
Epidote, Ca2(Al,Fe)3(SiO4)3(OH)
Tiger's Eye (Mineral Collection)
Tiger's Eye (SiO2 with crocidolite inclusions)
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Peach Aventurine
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Fairy Stone (Staurolite)
Staurolite (Fe2+2Al9Si4O22(OH)2)
Slate
Low-grade Metamorphic Rock
Hypersthene
Enstatite (Hypersthene variety), (Mg,Fe)SiO3
Smoky Quartz
Silicon Dioxide (SiO2)
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Schist
Schist
Garnet
Almandine (Fe3Al2(SiO4)3)
Rhodonite
(Mn,Fe,Mg,Ca)SiO3
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Iolite-bearing Gneiss (Cordierite)
Cordierite (Mg2Al4Si5O18) in Gneiss matrix
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Milky Quartz
Silicon Dioxide (SiO2)