Gneiss (Green Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Category
Metamorphic Or Igneous (Context Dependent)
Browse metamorphic or igneous (context dependent) specimens identified by the Rock Identifier community.
Learn about Metamorphic Or Igneous (Context Dependent) in the encyclopedia
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Gneiss (Gneissic Granite Pebble)
Metamorphic rock rich in Quartz, Feldspar, and Mica
metamorphic
Ruby
Corundum (Al2O3:Cr)
gemstone
Biotite Mica in Host Rock
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Quartz (beads)
SiO2 (Silicon Dioxide)
Mineral
Greenstone
Metabasalt
metamorphic
Gneiss
Gneiss (SiO2-rich metamorphic rock)
metamorphic
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (complex metamorphic silicate rock)
metamorphic
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Mica Schist / Granite
Mica Schist (Silicate metamorphic rock)
metamorphic
Greenstone
Metamorphic mafic rock (chlorite-actinolite-epidote schist)
metamorphic
Greenstone / Greenschist
Metamorphosed mafic igneous rock (Greenschist facies)
metamorphic
Gneiss
Gneiss
metamorphic
Greenstone / Metabasalt
Chlorite schist or Epidiorite
metamorphic
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Serpentinite
Serpentinite (composed primarily of serpentine group minerals like lizardite, chrysotile, or antigorite; Mg3Si2O5(OH)4)
metamorphic
Gneiss (Granitic Gneiss)
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Nephrite Jade
Tremolite-Actinolite solid solution, Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Unakite
Epidotized Granite
metamorphic
Greenstone
Metabasalt / Greenschist facies rock
metamorphic
Biotite Gneiss
Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)
metamorphic
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
mineral
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss (Metamorphic Rock Pebble)
Foliated Metamorphic Rock (Quartz-Feldspar Gneiss / Granitic Gneiss)
metamorphic
Gneiss (specifically Amphibolite Gneiss)
Gneiss
metamorphic
Quartz Vein in Host Rock
Quartz (SiO2) in Mafic or Sedimentary Matrix
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Lapis Lazuli
Lapis Lazuli (Rock containing Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Milky Quartz with Mica Matrix
SiO2 (Silicon Dioxide) with Muscovite/Biotite mica
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Red Garnet Gemstone
Pyrope-Almandine Garnet (Mg3Al2(SiO4)3 to Fe3Al2(SiO4)3)
gemstone
Veined Quartz
SiO2 (Silicon Dioxide)
Mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz Vein / Quartzite with Iron Oxide Staining
Silicon Dioxide (SiO2)
mineral
Graphite
Graphite (Carbon, C)
mineral