Quartzite (River Stone)
Quartzite (SiO2)
metamorphic
Category
Metamorphic Rock (Variety Of Quartz)
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Pyrite in Quartz (Drill Core)
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions
igneous/metamorphic (hydrothermal)
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Banded Gneiss
Gneiss (quartz-feldspar-biotite metamorphic rock)
metamorphic
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Jasper/Agate variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Chert (Common Opal/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
River Cobble (Quartzite with Iron Staining)
Metamorphic Quartzite (SiO2 with Fe2O3 inclusions)
metamorphic
Amethyst Geode
Silicon Dioxide (SiO2) - Amethyst variety of Quartz
mineral
Quartzite pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Unakite
Epidotized Granite
metamorphic
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Mineral
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite (Milky Quartz pebble)
Silicon Dioxide (SiO2)
metamorphic
Iron-stained Quartzite / Chert
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
metamorphic
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Quartz (possibly Citrine or Smoky Quartz variety)
Silicon Dioxide (SiO2)
mineral
Garnet in Matrix (likely Almandine in Quartz/Mica Schist)
Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock
metamorphic
Agate (Geode nodule)
Cryptocrystalline Quartz (SiO2)
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Unakite (Epidotized Granite)
Unakite (Rock composed of Epidote Ca2(Al,Fe)3(SiO4)3(OH), Orthoclase KAlSi3O8, and Quartz SiO2)
metamorphic
Black Onyx
Silicon dioxide (SiO2) - Chalcedony variety
mineral
Yellow Quartzite or Yellow Jasper
Quartzite (primarily SiO2 with Iron oxide staining)
metamorphic
Quartzite Pebbles (River Stones)
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Quartzite with Quartz Vein
Metamorphosed sandstone (SiO2)
metamorphic
Mica Schist
Mica Schist (Intermediate-grade Metamorphic Rock)
metamorphic
Inspirational River Stone (Quartzite)
Metamorphosed Quartz-rich Rock (Quartzite) with SiO2 composition
metamorphic
Gneiss
Gneiss (a type of metamorphic rock)
Metamorphic Rock
Mica Schist
Mica Schist (Composition typically contains Muscovite: KAl2(AlSi3O10)(OH)2 or Biotite: K(Mg,Fe)3AlSi3O10(OH)2 along with Quartz and Feldspar)
metamorphic
Petrified Wood (Silicified Wood)
Silicified Wood / Silicon Dioxide (SiO2)
metamorphic
Quartzite River Stone
Quartzite (primarily SiO2)
metamorphic