Gneiss (specifically Epidote-Quartz Gneiss)
Gneiss containing Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)) and Quartz (SiO2)
metamorphic
Category
Sedimentary And Metamorphic Minerals
Browse sedimentary and metamorphic minerals specimens identified by the Rock Identifier community.
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Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Gneiss
Metamorphic Gneiss
metamorphic
Feldspar
Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Petrified Wood
Silicified wood (Quartz, SiO2)
metamorphic
Banded gneiss pebble
Biotite–quartz–feldspar gneiss (composition variable)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Metamorphic
Greenstone
Metabasalt / Chlorite Schist
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)
metamorphic
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
mineral
Tumbled milky quartz (likely quartz pebble)
Quartz, silicon dioxide (SiO₂)
mineral
Garnet Schist or Garnet-bearing Quartzite
Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Greenschist
Greenschist facies rock (containing chlorite, actinolite, albite, and epidote)
metamorphic
Mica Schist
Mica Schist (contains muscovite/biotite, quartz, plagioclase)
metamorphic
Banded Gneiss
Gneiss (Metamorphic silicate rock)
metamorphic
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Banded gneiss
Gneiss; typically quartz–feldspar–mica assemblage
metamorphic
Greenschist
Chlorite schist
metamorphic
Garnet Schist
Garnetiferous Micaceous Schist
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Peach/Orange)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Gneiss
High-grade regional metamorphic rock (Foliated Gneiss)
metamorphic
Mica Schist with Quartz
Mica Schist (principally Muscovite and Biotite with Quartz veins)
metamorphic
Banded gneiss
Gneiss, commonly quartz–feldspar–biotite gneiss
metamorphic
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral