Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Category
Mineral In Metamorphic Rock
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
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Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Greenstone / Epidosite
Epidosite (primary minerals: Epidote and Quartz)
metamorphic
Gneiss
Gneiss
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Gossan (Iron Hat)
Goethite-Hematite rich weathered rock (Fe-hydroxides)
sedimentary
Marble
Recrystallized Calcite Rock (CaCO3)
metamorphic
Yellow Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Unidentifiable Specimen
Undetermined
Unknown
Clear Quartz (Cut/Faceted Gemstone)
Silicon Dioxide (SiO2)
gemstone
Garnet
Almandine formula: Fe3Al2(SiO4)3
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (composed largely of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile: Mg3Si2O5(OH)4)
metamorphic
Mica Schist
Mica Schist
metamorphic
Mica Schist with Pyrite and Quartz
Metamorphic Rock (Muscovite-Biotite Schist)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Sapphire
Corundum (Al2O3)
gemstone
Quartz Heart or Arrowhead Shape
Silicon Dioxide (SiO2)
mineral
Dragon Blood Jasper
Epidote-containing Quartz Chalcedony (SiO2 with Ca2(Al, Fe)3(SiO4)3(OH))
metamorphic
Quartzite with Chlorite/Epidote
Metamorphosed Quartzite (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Dragon Blood Jasper (Epidote with Piedmontite or Quartz)
Epidote-rich Quartzite / SiO2 with (Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))
metamorphic
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Vein Rock
Silicon Dioxide (SiO2)
mineral
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline / Orthoclase, KAlSi3O8)
mineral
Quartzite
Quartzite (Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Banded Gneiss
Gneiss
metamorphic
Aventurine
Quartzite with inclusions (SiO2 containing Fuchsite chrome mica)
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral