Blue Quartzite
Quartzite with inclusions (SiO2)
metamorphic
Category
Mineral, Specifically A Variety Of Quartz
Browse mineral, specifically a variety of quartz specimens identified by the Rock Identifier community.
Quartzite
Quartzite (SiO2)
metamorphic
Chert (Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
sedimentary
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Tiger's Eye (Brown/Dark variety)
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)
metamorphic
Chert (Yellow or Brown Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Granitic Pegmatite with Schorl
Granitic Pegmatite (NaAlSi3O8, KAlSi3O8, SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
igneous
Limonite after Pyrite (Prophecy Stone)
Limonite (FeO(OH)·nH2O) replacing Pyrite (FeS2)
Mineral pseudomorph
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Quartz (Orangey-white variety)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Zircon
Zirconium Silicate (ZrSiO4)
mineral
Jasper
Silicon Dioxide (SiO2) with iron and magnesium inclusions
sedimentary
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Sandstone (specifically Picture Sandstone or Wonderstone)
Arenite (composed primarily of SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Glauconitic Sandstone (Greensand)
Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)
sedimentary
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Basalt
Basalt (composition of plagioclase feldspar and pyroxene)
Igneous
Red Jasper (Chert)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Red Sandstone
Arenite (primarily Quartz, SiO2, with Iron Oxide cementing agent)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (specifically tan/pink variety)
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Quartz Sandstone (predominantly)
Sedimentary
Sunstone with Moonstone (Peach Moonstone)
Orthoclase Feldspar (KAlSi3O8)
mineral
Banded Calcite (often sold as 'Mexican Onyx')
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Chalcedony
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Granodiorite
Granodiorite (Phaneritic intrusive igneous rock containing Plagioclase, Quartz, and Biotite/Amphibole)
igneous
Red Quartzite
Quartzite (primarily SiO2)
metamorphic
Orthoclase Feldspar (Sunstone variety)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron impurities
mineral
Chert (including Flint and Jasper variants)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (SiO2 principal)
sedimentary
Quartz (possibly milky quartz or quartz with inclusions)
SiO2 (Silicon Dioxide)
Mineral
Agate (Polished Nodule)
Agate (Silicon Dioxide, SiO2)
mineral
Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Clear Quartz (or Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Blue Quartz
Quartz (SiO2) with inclusions
Mineral
Sandstone (Quartzose Sandstone Pebble)
Arenite (primarily SiO2)
sedimentary
Fossil Shark Tooth (Otodus obliquus)
Otodus obliquus; hydroxyapatite (mineralized form Ca5(PO4)3(OH))
sedimentary (fossiliferous)