Gneiss
Gneiss (foliated metamorphic rock)
metamorphic
Category
Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)
Browse metamorphic rock (for nephrite and some jadeite); mineral (for jadeite) specimens identified by the Rock Identifier community.
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Diorite Gneiss
Foliated Diorite Gneiss
metamorphic
Gneiss (High-Grade Metamorphic Rock)
Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Gneiss
Gneiss (high-grade metamorphic rock)
metamorphic
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Tiger's Eye
Silicon dioxide (SiO2) with fibrous inclusions of crocidolite
Mineral
Greenstone / Nephrite Jade
Tremolite-actinolite series (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Unidentified Rock Fragment
Unknown
Rock
Gneiss (Metamorphosed Granitic Rock)
Gneiss (composed mainly of quartz, feldspar, biotite, and/or hornblende)
metamorphic
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Blue Zircon
Zircon (Zirconium Silicate), ZrSiO4
gemstone
Granitic Pegmatite Intrusion in Host Rock
Pegmatite dike in amphibolite or schist
igneous and metamorphic
Serpentine
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
gemstone
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Greenstone
Metabasalt (composed of chlorite, epidote, and actinolite)
metamorphic
Quartzite with Mica schist fragment
Quartzite (SiO2) with Muscovite/Biotite Schist
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Greenstone
Greenschist / Meta-basalt
metamorphic
Greenstone with Quartz Veining
Epidiorite or Metabasalt with SiO2 (Quartz) veins
metamorphic
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Serpentinized ultramafic rock (serpentinite)
Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with possible magnetite, chromite, talc, and carbonate
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss (River Cobble)
Gneiss (Foliated Metamorphic Rock)
metamorphic
Gneiss with Quartz/Feldspar Vein
Felsic to intermediate gneiss
metamorphic
Gneiss (Granitic Gneiss)
Gneiss (from German Gneis, related to 'spark')
metamorphic
Yellow Jade (Nephrite)
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Slate
Foliated Metamorphic Rock (Slate)
metamorphic
Granite Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Banded Gneiss
Gneiss (Metamorphic high-grade, predominantly SiO2, Al2O3, K2O, Na2O)
metamorphic