Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
Category
Browse igneous specimens identified by the Rock Identifier community.
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese
Magnetite / Ironstone
Magnetite (Fe3O4)
Granite
Granite (Phaneritic Igneous Rock)
Granodiorite River Pebble
Granodiorite
Magnetite
Magnetite (Fe3O4)
White Quartz
Silicon Dioxide (SiO2)
Quartz Heart or Arrowhead Shape
Silicon Dioxide (SiO2)
Garnetiferous Pegmatite
Pegmatite with Almandine Garnet and Muscovite
Magnetite / Ironstone
Iron(II,III) oxide (Fe3O4)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Sodalite
Sodalite - Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Granite
Granite (compositionally: Quartz, Alkali Feldspar, and Plagioclase)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
Magnetite (Lodestone)
Magnetite (Fe3O4)
Granite
Granite (a felsic intrusive igneous rock)
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)
Granite
Granite (a common type of Felsic Intrusive Igneous Rock)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
Epidote with Quartz/Feldspar
Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) with associated minerals in a host rock
Granite
Phaneritic Intrusive Igneous Rock (primarily Quartz, Feldspar, and Mica)
Granite fragment
Granite
Black Beauty Meteorite
NWA 7034 (Northwest Africa 7034)
Granite and Igneous Mix
Phaneritic Felsic to Mafic Intrusive Rocks
Red Garnet (likely Almandine or Pyrope)
Garnet group: X3Y2(SiO4)3 (e.g., Almandine: Fe3Al2Si3O12)
Yellow Sapphire or Citrine
Al2O3 (Corundum) or SiO2 (Quartz)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
Granite
Plutonic Igneous Rock (composed typically of SiO2, Al2O3, K2O, Na2O, CaO)
Dalmation Jasper (Dalmation Stone)
Perthitic feldspar-quartz-amphibole rock
Quartz with Mica
SiO2 (Quartz) with Potassium aluminum silicate (Muscovite)
Granite
Granite
Porphyritic Basalt (with Augite Crystals)
Porphyritic Mafic Volcanic Rock (Fe-Mg Silicates)