Quartzite
Quartzite (primarily SiO2)
Category
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
Quartzite
Quartzite (primarily SiO2)
Ruby in Fuchsite (often confused with Ruby in Zoisite)
Corundum (Al2O3) in Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)
Dyed Pink Quartzite (Jadeite Simulant)
Silicon Dioxide (SiO2) with organic dye
Quartz
Silicon Dioxide (SiO₂)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Quartzite
Quartzite (primarily SiO2)
Schist with Schorl (Black Tourmaline)
NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)
Quartzite
Quartzite (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Tiger's Eye (likely Hawk's Eye variant)
Pseudomorph of Quartz after Crocidolite (SiO2)
Granite
Granite (a felsic intrusive igneous rock)
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Eclogite
Eclogite (Omphacite-Garnet rock)
River Stone (Quartzite/Siltstone mixture)
Silicon Dioxide (SiO2) based metamorphosed sandstone
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Green Aventurine
Quartz with Fuchsine inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Unakite
Unakite (altered granitic rock)
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
Serpentine
Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Lapis Lazuli
Sodalite-rich metamorphic rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)
Petrified Wood
Silicified Wood (primarily Quartz / Chalcedony: SiO2)
Quartzite
Quartzite (SiO2-dominant rock)
Serpentinite (Serpentine Rock)
Serpentinite is a rock composed of one or more serpentine group minerals, chiefly antigorite, chrysotile, and lizardite, with the general formula (Mg,Fe)3Si2O5(OH)4. Often includes other minerals like magnetite, talc, and chromite.
Unakite
Epidotized Granite
Petrified Wood
Silicified Wood (SiO2)
Quartzite
Quartzite (primarily SiO2)
Unakite
Epidotized Granite
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
Graphite Schist
C (Carbonaceous Schist)
Man-made Carved Stone (Scream Mask/Skull motif)
Carved Soapstone or Serpentine-rich rock
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
Serpentinite (River Pebble)
Serpentinite (complex of Antigorite, Lizardite, and Chrysotile: Mg3Si2O5(OH)4)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Schist (Garnet-Mica Schist)
Garnetiferous Mica Schist (primarily Muscovite/Biotite and Almandine Garnet)
River Quartzite (or Quartz Cobble)
Quartzite (primarily Silicon Dioxide - SiO2)
Mixed Tumbled Gemstones and River Rocks
Mixed Decorative Stones (predominantly Silicon Dioxide - SiO2 variants)