Red Quartzite
Quartzite (primarily SiO2)
Category
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Red Quartzite
Quartzite (primarily SiO2)
Quartzite (specifically Milky Quartz variety)
Quartz (SiO2)
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
Chert (specifically Novaculite)
Microcrystalline Quartz (SiO2)
Feldspar (specifically Orthoclase)
Potassium aluminum silicate (KAlSi3O8)
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (often called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Chalk-associated Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Chert (often called Flint)
Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)
Citrine Quartz
Silicon Dioxide (SiO2) - Ferric Iron impurities
Banded Agate (specifically Botswana Agate or Water-line Agate)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Amazonite
Amazonite (KAlSi3O8)
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline quartz (SiO2)
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
Banded Agate (specifically Carnelian Agate slice)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
Banded Agate (Onyx variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Agate (Polished Sphere)
Silicon Dioxide (SiO2)
Ocean Jasper
Silicon Dioxide (SiO2) with various inclusions
Red Quartzite
Quartzite (mostly SiO2)
Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Chert (Smoky variety)
Microcrystalline Quartz (SiO2)
Green Aventurine
Silicon Dioxide (Quartz variety with Fuchsite inclusions - SiO2)
Granodiorite
Granodiorite (Intermediate to Felsic Intrusive Rock)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
Moonstone (with Tourmaline/Mica)
Orthoclase/Albite Feldspar (KAlSi3O8 / NaAlSi3O8)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Amazonite
K(AlSi3O8) - Potassium Aluminum Silicate
Red Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide impurities (Hematite)
Carnelian
Carnelian (SiO2)
Quartz (specifically Milky/White Quartz)
Silicon Dioxide (SiO2)
Agate (specifically a Blue Agate Geode Slice)
Chalcedony (cryptocrystalline variety of Quartz); SiO2
Picture Jasper (specifically Biggs or Deschutes variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Red Jasper
Jasper (Silica with Hematite impurities), SiO2
Chert (Yellow Jasper)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper (specifically Fancy or Polychrome Jasper)
Silicon Dioxide (SiO2) - Chalcedony
Milky Quartz
Silicon Dioxide (SiO2)
Tourmalinated Quartz
Silicon dioxide (SiO2) with inclusions of Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)