Granite
Phaneritic Plutonic Felsic Rock (KAlSi3O8 + SiO2 + NaAlSi3O8)
Category
Browse mineral in igneous rock specimens identified by the Rock Identifier community.
Granite
Phaneritic Plutonic Felsic Rock (KAlSi3O8 + SiO2 + NaAlSi3O8)
Veined Basalt River Stone
Basalt with Calcite or Quartz veining
Milky Quartz
Silicon Dioxide (SiO2)
Granite or Granitic Gneiss River Rock
Granite / Gneiss
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
Granite (tumbled pebble)
Granite (Plutonic Igneous Rock)
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
Milky Quartz Pebble (Iron-Stained)
Silicon Dioxide (SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Granite
Granite (Phaneritic Acid Igneous Rock)
Granite
Granite
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Amethyst
Crystalline Quartz (SiO2) with iron impurities
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock with secondary mineral fillings)
Gneiss
Foliated Metamorphic Rock (Gneiss)
Granite
Phaneritic Felsic Igneous Rock
Amethyst
Quartz (Silicon Dioxide) - SiO2 with Iron impurities
Granite (specifically Pink or Alkali Feldspar Granite)
Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)
Granite
Granite (a phaneritic intrusive igneous rock)
Milky Quartz with inclusions
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Vesicular Basalt with Siltstone
Mafic Volcanic Rock (Basaltic Composition)
Granite Pebble
Felsic Intrusive Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Quartz (Druzy) in host rock
SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)
Sunkissed Quartz or Hematoid Quartz
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Granite
Intrusive Phaneritic Felsic Igneous Rock
Clear Quartz (Druzy/Crystal Cluster)
Silicon Dioxide (SiO2)
Black Tourmaline (Schorl)
Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Lapis Lazuli
Lazurite-rich metamorphic rock (approx. Na6Ca2(Al6Si6O24)(S,SO4,Cl)1,2)
Gneiss (with Quartzite and Mica)
Gneiss
Granite
Granite (Felsic Plutonic Rock)
Amphibolite with Hornblende
Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)
Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
Quartz (in a rock matrix)
Quartz (SiO2)
Granite
Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).
Diorite (Polished River Pebble)
Diorite (Intermediate intrusive igneous rock)
Gneiss
Gneiss
Pumice (likely)
Pumice (extrusive igneous rock)