Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Category
Mixed: Igneous And Sedimentary
Browse mixed: igneous and sedimentary specimens identified by the Rock Identifier community.
Learn about Mixed: Igneous And Sedimentary in the encyclopedia
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneis
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss (specifically a Hornblende Gneiss or Micaceous Gneiss)
Gneiss (metamorphic rock composed primarily of quartz, feldspar, and mafic minerals)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Granitic Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Gneiss (likely Granitic Gneiss)
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss (with Quartzite and Mica)
Gneiss
metamorphic
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Fe2O3)
mineral
Granitic Gneiss
Gneiss (Metamorphic rock predominantly containing quartz, K-feldspar, and plagioclase)
metamorphic
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Gneiss (Pebble)
Gneiss
metamorphic
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
White Agate (Chalcedony)
Agate (Silicon Dioxide - SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Gneiss (with iron staining)
Gneiss
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
White Quartz Pebbles
Quartz (Silicon Dioxide, SiO2)
Mineral
Gneiss
Gneiss
metamorphic
Quartz (Clear/White)
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Gneiss
Gneiss
metamorphic
Gneiss
High-grade regional metamorphic rock (Foliated)
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Fluorite (Blue)
Calcium Fluoride (CaF2)
mineral
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Carnelian Agate
Carnelian (SiO2 with iron oxide impurities)
mineral
Banded Agate (Pink Chalcedony)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
Mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Gneiss (High-grade Regional Metamorphism)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Magnetite or Magnetic Iron Ore
Magnetite (Fe3O4)
mineral