Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)
Gneiss (complex silicate composition)
metamorphic
Category
Igneous, Sedimentary, Metamorphic, And Mineral
Browse igneous, sedimentary, metamorphic, and mineral specimens identified by the Rock Identifier community.
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Green Aventurine and Clear Quartz
Aventurine (variety of Quartz - SiO2) and Quartz (SiO2)
Mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Biotite (Black Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH)2)
mineral
Granite or Granitic Gneiss
Granitoid / Gneiss
Igneous / Metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss (specifically Micaceous Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Banded Gneiss (with Quartz Vein)
Gneiss (Metamorphic rock of varying mineralogy)
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Pyrite (Fools Gold)
Iron Sulfide (FeS2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Schist (Chlorite or Mica-rich)
Chlorite Schist
metamorphic
Epidote
Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))
mineral
Quartz
Silicon Dioxide (SiO2)
Mineral
Gneiss (Granitic Gneiss)
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Biotite Schist
Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
metamorphic
Granitic Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss (with iron staining)
Gneiss
metamorphic
Gneiss
Metamorphic rock of high-grade regional metamorphism
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Biotite Schist
Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
metamorphic
Gneissic Schist
Foliated Metamorphic Rock (Schist/Gneiss transition)
metamorphic
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Iron Pyrite)
Iron Sulfide (FeS2)
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Quartz Vein in Host Rock
Quartz (SiO2) in Mafic or Sedimentary Matrix
igneous