Gneis
Gneiss (High-grade metamorphic rock)
metamorphic
Category
Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks
Browse mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks specimens identified by the Rock Identifier community.
Learn about Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks in the encyclopedia
View all →
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz (Raw Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Mineral
Quartz
Quartz (Silicon Dioxide - SiO2)
Mineral
Blue apatite (likely rough/tumbled specimen)
Apatite group, commonly fluorapatite — Ca5(PO4)3F
mineral
Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Magnetite (or Magnetic Iron Ore)
Magnetite (Fe3O4)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Citrine
Silicon Dioxide (Quartz variety), SiO2
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone
Orthoclase (Potassium Feldspar), (K,Na)AlSi3O8
mineral
Kyanite
Kyanite (Al2SiO5)
Mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Quartz
SiO2 (Silicon dioxide)
mineral
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Banded Gneiss Pebble
Gneiss (Metamorphic Rock)
metamorphic
Fluorite
Calcium Fluoride (CaF2)
mineral
Small quartz-rich mineral fragment
Quartz (SiO₂), possibly milky or chalcedonic quartz
mineral
Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Basalt (Weathered River Pebble)
Extrusive Igneous Rock
igneous
Gneiss
High-grade Metamorphic Gneiss
metamorphic
Magnetite (Small Granule)
Magnetite (Fe3O4)
mineral
Pyrite
Iron Disulfide (FeS2)
Mineral
Blue Dumortierite Quartz
Dumortierite Inclusions in Quartz (SiO2 with Al7(BO3)(SiO4)3O3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Pyrite Nodule
Iron Sulfide (FeS2)
mineral
Schist
Mica Schist (Metamorphic rock)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
White Sapphire
Corundum (Al2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Granite or Granitic Gneiss
Granitoid / Gneiss
Igneous / Metamorphic
Epidote with Quartz
Ca2(Al,Fe)3(SiO4)3(OH) (Epidote) / SiO2 (Quartz)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Garnet in Schist/Gneiss Matrix
Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)
metamorphic