Pyrite
Iron Sulfide (FeS2)
Category
Browse mineral on igneous rock specimens identified by the Rock Identifier community.
Pyrite
Iron Sulfide (FeS2)
Pegmatite
Igneous Pegmatite (felsic intrusive rock)
Granite
Felsic intrusive igneous rock
Granite
Phaneritic Felsic Igneous Rock
Granite
Phaneritic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
K2 Azurite Granite / K2 Stone
Granite (igneous rock) with Azurite inclusions (mineral)
Gneiss
Gneiss
Granite
Felsic intrusive igneous rock
Basalt with Calcite Veining
Aphanitic Mafic Igneous Rock (Basalt) with CaCO3
Porphyritic Igneous Rock / Porphyry
Porphyry (Plagioclase/Quartz phenocrysts in a finer-grained groundmass)
Milky Quartz
Silicon Dioxide (SiO2)
Granite Cobble
Felsic Intrusive Igneous Rock (Granite)
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Granite Water-Worn Pebble
Intermediate to Felsic Phaneritic Igneous Rock
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Granite
Phaneritic Plutonic Igneous Rock (primarily composed of quartz, alkali feldspar, and plagioclase)
Basalt
Extrusive Igneous Rock (Mafic)
Granite
Phaneritic Igneous Rock (Granite)
Granite
Felsic intrusive igneous rock
Granite Pebble
Granite (Phaneritic Igneous Rock)
Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)
Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)
Vesicular Basalt with Amygdaloidal Infill
Basalt (Mafic Extrusive Igneous Rock)
Ptygmatic Migmatite
Migmatite (consisting of Neosome and Paleosome fractions)
Granite
Phaneritic Igneous Rock (Granite)
Granite (Weathered)
Phaneritic Felsic Igneous Rock
Granite
Phaneritic Igneous Rock (Granite)
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Granite
Felsic intrusive igneous rock
Dalmation Jasper
Perthitic Feldspar with Arfvedsonite inclusions
Basalt
Extrusive Igneous Rock
Basalt
Extrusive igneous rock
Granite Pebble
Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)
Basalt Outcropping
Aphanitic Mafic Igneous Rock
Vesicular Basalt with Quartz/Chalcedony
Vesicular Basalt (primarily Plagioclase, Pyroxene, and Olivine with SiO2 infill)
Dalmatian Jasper
Dalmatian Stone (comprised of Feldspar, Quartz, and Arfvedsonite)
Smoky Quartz
Silicon Dioxide (SiO2)
Garnet (likely Almandine or Pyrope)
Garnet (Group Name), Fe3Al2(SiO4)3 or Mg3Al2(SiO4)3