Chert (White/Light Tan)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Chert (White/Light Tan)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Pink Granite
Phaneritic intrusive felsic igneous rock
Clear Quartz
Silicon Dioxide (SiO2)
Quartzite Cobble
Quartzite (chemically SiO2)
Gneiss
Gneiss
Serpentine
Serpentinite (group of hydrous magnesium iron phyllosilicate minerals, e.g., Lizardite, Antigorite)
Quartzite
Quartzite (primarily SiO2)
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite Pebble (with possible inclusion)
Metamorphosed Quartz Sandstone (SiO2 with impurities)
Pink Granite
Phaneritic intrusive felsic igneous rock
Ferruginous Quartzite (Red Quartzite)
Quartzite (primarily SiO2 with Fe2O3 inclusions)
Vesicular Basalt (Lava Rock)
Basalt (Vesicular Variety)
Quartzite
Quartzite (SiO2)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Quartzite with Hematite staining
Metamorphic Quartzite (SiO2) with Ferruginous Oxides
Chert (Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Green variety)
Microcrystalline Opaline/Quartz (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite (Orthoquartzite)
SiO2 (Silicon Dioxide) with Iron Oxide inclusions
Amygdaloidal Basalt
Basalt with secondary mineral infilling
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)
Quartzite / Sandstone / Chert Mix
Silicon Dioxide (SiO2)
Chrysoprase
Chrysoprase (a variety of Chalcedony, SiO₂)
Granitoid (Granite/Gneiss mix)
Phaneritic Felsic Igneous Rock
Milky Quartz
Silicon Dioxide (SiO2)
Peach Moonstone (Orange/Peach Feldspar)
Potassium aluminum silicate (KAlSi3O8)
Gneiss
Gneiss
Blue Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
Gneiss
Gneiss
Quartzite Pebble (River Rock)
Metamorphic Quartzite (predominantly SiO2)
Smoky Quartz
Smoky Quartz (SiO2)
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Quartzite (River Siltstone variety)
Quartzite (SiO2)
Unakite Granitoid
Unakite (Metasomatized Granite)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Rose Quartz
Rose Quartz (SiO2)
Granite
Phaneritic Felsic Igneous Rock
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Gray Agate
Cryptocrystalline Quartz (SiO2)