Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 + varied clasts)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Sandstone (likely Arkose or Quartz Sandstone)
Arenite (SiO2 + varied clasts)
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Unakite
Epidotized Granite
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Red Quartzite River Rock
Metamorphic Quartzite (SiO2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Unakite
Epidotized Granite
Pink Quartzite
Quartzite (primarily SiO2 with trace impurities of iron oxides)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Yellowish variety)
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (Hydrated Magnesium Silicate Mg3Si2O5(OH)4)
Beryl (var. Heliodor or Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Schist
Lepidoblastic Mica Schist
Rough Garnet in Matrix
Almandine Garnet (Fe3Al2Si3O12)
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Quartz (Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2)
Banded Agate
Sedimentary Cryptocrystalline Quartz (SiO2)
Quartzite Cobble
Quartzite (mostly SiO2)
Unakite
Epidotized Granite
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide - SiO2)
Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
Quartzite
Quartzite (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Blue Quartz (Dumortierite Quartz)
Quartz (SiO2) with inclusions of Dumortierite (Al7(BO3)(SiO4)3O3)
Unakite (Epidotized Granite)
Unakite; primarily composed of Epidote (Ca2(Al,Fe)3(SiO4)3(OH)), Orthoclase (KAlSi3O8), and Quartz (SiO2)
Green Apophyllite and Stilbite on Quartz Cluster
Apophyllite-(K) (KCa4(Si8O20)(F,OH)·8H2O), Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O), Quartz (SiO2)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Quartzite (River Pebble)
Metamorphosed Quartz Sandstone (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Quartz Pebble
Silicon Dioxide (SiO2)
Quartzite River Rock
Quartzite (SiO2)