Garnet-Bearing Gneiss
Almandine-Garnet Gneiss
metamorphic
Category
Sedimentary And Metamorphic Minerals
Browse sedimentary and metamorphic minerals specimens identified by the Rock Identifier community.
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Banded sandstone pebble
Quartz-rich lithic sandstone; exact provenance and composition require testing
sedimentary
Amphibolite / Biotite Schist
Amphibolite (rich in Hornblende and Plagioclase feldspar)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss (with Mica and Quartz)
Gneissic Metamorphic Rock
metamorphic
Banded Gneiss
Gneiss
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Schist
Schist (Foliated Metamorphic Rock)
metamorphic
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Gneiss (Hornblende/Biotite Gneiss)
Foliated Metamorphic Rock (Quartz-Feldspar-Amphibole/Mica matrix)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz (Clear/Milky)
Silicon Dioxide (SiO2)
mineral
Green Mica Schist
Mica Schist (Fuchsite or Chlorite variety)
metamorphic
Granite Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Banded gneiss (likely orthogneiss or paragneiss)
Gneiss; composition commonly quartz + feldspar + mica, with possible amphibole/biotite
metamorphic
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
metamorphic
Granitic Gneiss
Gneiss (Complex silicate composition)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Granitic Gneiss
Gneiss (quartz-feldspar-mica complex)
metamorphic
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Tumbled quartz-rich stone, likely milky quartz
Quartz (SiO₂), possibly iron-stained milky quartz or quartzite
mineral
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (quartz-feldspar-biotite gneiss)
metamorphic
Gravel / Crushed Stone
Aggregate (mixed mineral rock fragments)
sedimentary
Quartz Boulder
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite / Iron Ore (likely Hematite-Magnetite mix)
Magnetite (Fe3O4)
mineral
Weathered foliated metamorphic rock, likely schist or gneiss
Mica schist to gneiss; commonly quartz + feldspar + biotite/muscovite
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral