Gneiss (specifically Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Category
Browse metamorphic rock (for both nephrite and jadeite) specimens identified by the Rock Identifier community.
Gneiss (specifically Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Granitic Gneiss
Gneiss (High-grade regional metamorphic rock)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Banded Gneiss (River Cobble)
Gneiss (High-grade regional metamorphic rock)
Anthracite Coal
Anthracite (Carbon-based sedimentary-metamorphic rock)
Banded River Cobble with Mafic Dike
Hydrothermally altered Graywacke or Sandstone with Mafic Intrusion
Schist
Mica Schist (primarily Muscovite and Quartz)
Serpentine
Serpentine Group (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
Magnetite Orthorthotropic Rock
Magnetite (Fe3O4)
Yellow Quartzite Pebble
Quartzite (primarily Silicon Dioxide - SiO2)
Gneiss
Gneiss
Slate
Foliated Metamorphic Rock (composed primarily of silica and alumina with iron and magnesium)
Greenschist (Greenstone)
Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Unakite (Epidote with Quartz and Feldspar)
Unakite (Metasomatized Granitic Rock)
Unakite
Unakite (altered granite)
Unakite (or Epidote-rich Granite)
Unakite (composed of Epidote {Ca2(Al, Fe)3(SiO4)3(OH)}, Pink Orthoclase Feldspar {KAlSi3O8}, and Quartz {SiO2})
Ruby in Zoisite (Anyolite)
Corundum var. Ruby in Zoisite (Al2O3 + (Ca2Al3(SiO4)3(OH)))
Serpentine
Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Marble
Recrystallized Carbonate Rock (CaCO3)
Quartzite Pebble
Recrystallized Quartz (SiO2)
Marble
Metamorphic Limestone (CaCO3)
Quartzite
Metamorphic Quartzite (predominantly SiO2)
Wishing Stone
Greenschist or Basalt with Quartz/Calcite Vein
Green Quartzite (or Aventurine)
SiO2 (Silicon Dioxide) primarily, with Fuchsite inclusions (K(Al,Cr)2AlSi3O10(OH)2)
Quartzite
Quartzite (SiO2)
Unakite
Epidotized Granite
Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
Gneiss
Gneiss
Clear Quartz
Silicon Dioxide (SiO2)
Quartz with Chalcopyrite and Pyrite
Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Serpentinite
Serpentinite (composed mainly of Group: Serpentine; (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
Dragon Blood Jasper
Epidote-containing Quartz Chalcedony (SiO2 with Ca2(Al, Fe)3(SiO4)3(OH))
Rough Star Sapphire (Corundum)
Al2O3 (Aluminum Oxide)