Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
sedimentary
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a microcrystalline quartz) specimens identified by the Rock Identifier community.
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Dumortierite Quartz
Al7BO3(SiO4)3O3 (Aluminum borate silicate)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Jasper/Flint Pebble)
Microcrystalline quartz (SiO2)
sedimentary
Chert (often called Flint for dark variants)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Rose Quartz
Silicon Dioxide with trace inclusions (SiO2)
mineral
Amethyst (Chevron Amethyst/Dream Amethyst)
Silicon Dioxide (SiO2) with trace Iron impurities
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartz (Drusy/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2 - Quartz/Chalcendony replacing organic matter)
sedimentary
Quartzite (Yellow/Tan river stone variety)
Quartzite (primarily SiO2)
metamorphic
Carnelian (Flame Polished)
Carnelian (SiO2 with Iron Oxide impurities)
mineral
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) - Microcrystalline Chalcedony
sedimentary
Banded Agate / Chalcedony
Silicon Dioxide (SiO2) with trace impurities
mineral
Orthoceras Fossil in Limestone
Orthoceras regulare (Class Cephalopoda; Order Orthocerida)
sedimentary
Green Aventurine (worked as a bead/sphere)
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
metamorphic
Chevron Amethyst
Silicon Dioxide (SiO2) with trace Iron (Fe3+)
mineral
Granite
Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)
igneous
Banded Agate (Pink Chalcedony)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Red Jasper (Jasper)
Silicon Dioxide (SiO₂)
sedimentary
Lemon Quartz (Orizaba/Citrinated Quartz)
Silicon Dioxide (SiO2) with iron impurities/treatment
mineral
Banded Agate (Geode Fragment)
Silicon Dioxide (SiO2) - Variety Agate
mineral
Yellow Aventurine
Quartz containing Muscovite or Mica inclusions (SiO2)
mineral
Green Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic
Chalcedony
Silicon Dioxide (SiO₂)
mineral
Milky Quartz
Milky Quartz (Silicon Dioxide, SiO2)
mineral
Mookaite Jasper
Radiolarite (SiO2 with impurities)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
sedimentary
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
Mineral
Chert (Nodular Chert)
Microcrystalline Silica (SiO2)
sedimentary
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Unakite
Epidote-Feldspar rock
Metamorphic Rock