Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Category
Browse metamorphic mineral specimens identified by the Rock Identifier community.
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Calcite (Optical Calcite / Iceland Spar)
Calcium Carbonate (CaCO3)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Yellow Quartz Pebble
SiO2 (Silicon Dioxide) with Iron Impurities
Carnelian (Orange Agate)
Carnelian (variety of Chalcedony, SiO2)
Garnet (specifically Almandine or Pyrope)
Almandine (Fe3Al2Si3O12) or Pyrope (Mg3Al2Si3O12)
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
White Quartz Pebble
Silicon Dioxide (SiO2)
Moonstone (Feldspar)
Orthoclase feldspar, (K,Na)AlSi3O8
Corundum (Ruby/Sapphire crystal)
Al2O3 (Aluminum Oxide)
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Quartz
SiO2 (Silicon Dioxide)
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Pyrite (on host rock)
Iron Sulfide (FeS2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Quartz (Milky/Common)
Quartz (Silicon Dioxide, SiO2)
Sodalite (Sunset Sodalite)
Sodalite: Na8(Al6Si6O24)Cl2
Banded Agate (Yellow Agate)
Silicon Dioxide (SiO2)
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Orange Quartz
Crystalline Silicon Dioxide (SiO2) with iron oxide inclusions
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Muscovite Mica (Golden/Yellow variety)
KAl2(AlSi3O10)(F,OH)2
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
Green Tourmaline
Verdelite (Silicate mineral); Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Gneiss
Gneiss (High-grade regional metamorphic rock)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)