Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Category
Igneous, Sedimentary, And Metamorphic
Browse igneous, sedimentary, and metamorphic specimens identified by the Rock Identifier community.
Learn about Igneous, Sedimentary, And Metamorphic in the encyclopedia
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Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite
Magnetite (Fe3O4)
Mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
River Pebble (Gneiss or Quartzite mixture)
Metamorphic rock (Commonly Gneissic)
metamorphic
Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pebble (likely Quartz or Chert)
SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.
Sedimentary Rock
Greenschist
Chlorite schist
metamorphic
Greenschist
Chlorite schist
metamorphic
River Pebble (Gneiss/Schist mix)
Metamorphic rock aggregate
metamorphic
Quartz Sand
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz Sand Gravel
Silicon Dioxide (SiO2)
sedimentary
Likely milky quartz fragment
Quartz (SiO₂)
mineral
Quartz with Iron Oxide Inclusions
SiO2
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
mineral
Black Onyx
Silicon Dioxide (SiO2) - Chalcedony variety
gemstone
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Hematite
Iron (III) oxide (Fe2O3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral