Beach Quartzite Pebble
Quartzite (primarily SiO2)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Beach Quartzite Pebble
Quartzite (primarily SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)
Riverstone Quartzite (Water-worn Siltstone/Quartzite)
Metamorphosed Quartz-rich Arenite (SiO2)
Yellow Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)
Gneiss (Banded Gneiss)
Gneiss
Yellow Quartzite (River Pebble)
Quartzite (SiO2 with iron oxide impurities)
Chert / Flint
Microcrystalline Quartz (SiO2)
Quartzite
Quartzite (SiO2)
Schist with Quartz/Mica
Mica Schist (primarily Muscovite and Quartz)
Yellow Quartzite River Stone
Quartzite (primarily SiO2)
Conglomerate
Conglomerate (Detrital sedimentary rock)
Pink Botswana Agate
Silicon Dioxide (SiO₂), a cryptocrystalline variety of Quartz and Chalcedony
Gneiss (Cobble)
Gneiss
Quartzite
Quartzite (SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Quartzite Pebbles
Quartzite (SiO2 silicon dioxide dominant)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Petrified Wood
Silicified wood (primarily Silicon Dioxide - SiO2)
Jasper Agate (specifically Brecciated Jasper)
Silicon Dioxide (SiO2) with iron oxide and clay impurities
Smoky Quartz
Smoky Quartz (SiO2)
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
Red Quartzite Cobble
Quartzite (primarily SiO2)
Red Quartzite / Metasandstone River Pebble
Quartzite (primarily SiO2 with hematite inclusions)
Orange Quartzite (or Iron-Stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide impurities (Fe2O3)
Serpentinite
Serpentinite (complex of lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)
Chert (Green variety)
Microcrystalline Opaline/Quartz (SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Schist
Mica Schist (primarily composed of quartz, feldspar, and mica)
Chert (varieties include Flint and Jasper)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Quartzite Pebble
Quartzite (primarily SiO2)
Granite
Phaneritic Felsic Igneous Rock
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Gneiss
Gneiss
River Quartzite or Chert Pebble
Quartzite (primarily Silicon Dioxide - SiO2)