Gneiss
Gneiss
metamorphic
Category
Mineral (Metamorphic Pseudomorph)
Browse mineral (metamorphic pseudomorph) specimens identified by the Rock Identifier community.
Learn about Mineral (Metamorphic Pseudomorph) in the encyclopedia
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Gold Mineral
Native Gold (Au)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Magnetite (in matrix)
Magnetite (Fe3O4)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
gemstone
Ruby (faceted)
Corundum (Al2O3 with chromium traces)
gemstone
Corundum (Sapphire and Ruby)
Aluminum Oxide (Al2O3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Grey Marble
Recrystallized Calcite-rich Limestone
metamorphic
Limonite-stained Quartzite
Metamorphosed Quartz-rich Arenite (SiO2 with FeO(OH)·nH2O)
metamorphic
Red Quartzite
Quartzite (Silicon Dioxide, SiO2)
metamorphic
Marble
Metamorphic rock primarily composed of Calcite (CaCO3)
metamorphic
Marble
Metamorphosed Limestone (CaCO3)
metamorphic
Schist
Mica Schist
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Diorite Gneiss
Foliated Diorite Gneiss
metamorphic
Blue Quartzite
Quartzite with inclusions (often Dumortierite or Magnesio-riebeckite)
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Moonstone (Feldspar)
Orthoclase Feldspar KAlSi3O8 / Albite NaAlSi3O8
gemstone
Citrine Quartz (Raw)
Silicon Dioxide (SiO2)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Fuchsite-bearing Quartzite (Green Quartzite)
Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2) in Quartzite
metamorphic
Mica-rich Sandstone or Micaceous Schist Weathering
Micaceous Schist (Muscovite-Quartz composition)
Metamorphic or Sedimentary depending on local grade
Pyrite
Iron Sulfide (FeS2)
mineral
Mica
Muscovite / Biotite (Phyllosilicate group)
mineral
Epidote in Quartz
SiO2 with Ca2Al2(Fe3+,Al)(SiO4)3(OH)
mineral
Almandine Garnet
Fe3Al2(SiO4)3
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz with inclusions
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Lapis Lazuli (Low-grade)
Lapis Lazuli (Aggregate of Lazurite, Calcite, and Pyrite)
metamorphic
Greenstone / Epidosite
Epidosite (Metasomatic rock consisting mainly of Epidite Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz)
metamorphic