Chert (Nodule)
Microcrystalline Quartz (SiO2)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Slate
Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)
Pink Granite
Granite (Phaneritic Felsic Igneous Rock)
Ferruginous Sandstone
Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)
Arsenopyrite in Quartz/Host Rock
Arsenopyrite (FeAsS)
Green Aventurine in Host Rock
SiO2 (Quartz with Fuchsite inclusions)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Unakite
Epidotized Granite (SiO2 with Ca2(Al, Fe)3(SiO4)3(OH))
River Rock (Quartzite Pebble)
Quartzite (primarily SiO2)
Granite
Granite
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3Si2O5(OH)4
Unakite
Unakite (Epidotized Granite)
Quartzite
Quartzite (primarily SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Garnet-Mica Schist
Schist (variety with Almandine Garnet, Fe3Al2(SiO4)3)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (River Siltstone Quartzite Pebble)
Silicon Dioxide (SiO2)
Black Veined Jasper (Spiderweb Jasper)
Silicon Dioxide (SiO2)
Druzy Quartz Geode (Oco or Moroccan variety)
Silicon Dioxide (SiO2)
Quartzite River Rock
Quartzite (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Serpentine
Antigorite/Lizardite/Chrysotile complex: (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Blue Chalcedony (Tumbled)
Silicon Dioxide (SiO2)
Quartzite with Vugs
Metamorphosed Quartz Sandstone (SiO2)
Chert (Nodular or Massive Variety)
Cryptocrystalline Quartz (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Rough Rose Quartz
Quartz (Silica - SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
River Cobble (Salt and Pepper Gneiss)
Gneiss (High-grade regional metamorphic rock)
Unakite
Epidotized Granite
Unakite
Epidotized Granite (SiO2, KAlSi3O8, Ca2(Al, Fe)3(SiO4)3(OH))
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
Vesicular Basalt with Calcification
Vesicular Basalt (Aphanitic extrusive igneous rock)
Granite
Phaneritic Felsic Intrusive Igneous Rock
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Green Jasper
Silicon Dioxide (SiO2) with impurities
Quartzite River Stone
Quartzite (primarily SiO2)