Gneiss
Metamorphic Gneiss
metamorphic
Category
Metamorphic And Igneous Rocks
Browse metamorphic and igneous rocks specimens identified by the Rock Identifier community.
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Mica / Muscovite or Biotite
Phyllosilicate mineral group (e.g., KAl2(AlSi3O10)(OH)2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Ruby (Corundum)
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral
Banded Gneiss
Gneiss (SiO2 enriched metamorphic rock)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Mica/Host Rock
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Agate
Chalcedony (SiO2)
sedimentary
Microcline Feldspar
KAlSi3O8
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
NaFe2+3Al6(BO3)3Si6O18(OH)4
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Tourmaline in Quartz Matrix
Complex silicate of boron and aluminum (Schorl/Elbaite/Dravite) - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
mineral
Iolite
Cordierite (Mg2Al3(AlSi5O18))
gemstone
Quartz pebble
SiO2
mineral
Tumbled Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Black Tourmaline
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with Fe impurities)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rainbow Moonstone
White Labradorite (Plagioclase Feldspar), (Na,Ca)(Al,Si)4O8
gemstone
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral