Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Category
Sedimentary Or Metamorphic (Base Substrate)
Browse sedimentary or metamorphic (base substrate) specimens identified by the Rock Identifier community.
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (specifically Clear Quartz or Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Gray variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Green Schist
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss (Granitic Gneiss)
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Schist with Schorl (Black Tourmaline)
NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)
metamorphic
Slate
Foliated Metamorphic Rock (primarily composed of quartz, illite, and chlorite)
metamorphic
Gneiss (Granitic Gneiss)
Gneiss
metamorphic
Schist
Mica Schist
metamorphic
Mica Schist
Foliated Metamorphic Rock (rich in Muscovite or Biotite)
metamorphic
Gneiss (specifically Micaceous Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Garnet Schist
Garnetiferous Micaceous Schist
metamorphic
White Marble
Recrystallized Calcite Rock (CaCO3)
metamorphic
Marble
Recrystallized Calcite / Dolomite (CaCO3)
metamorphic
Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
metamorphic
Amphibolite
Amphibolite
metamorphic
Slate
Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)
metamorphic
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral