Rock Identifier

Category

Mineral (Specifically A Cryptocrystalline Variety Of Quartz)

Browse mineral (specifically a cryptocrystalline variety of quartz) specimens identified by the Rock Identifier community.

Learn about Mineral (Specifically A Cryptocrystalline Variety Of Quartz) in the encyclopedia

Smoky Quartz

Lithium Quartz

Dumortierite Quartz

Dumortierite Quartz

Morion Quartz

Rose Quartz

Milky Quartz

Snow Quartz

Garden Quartz

Blue Quartz

Phantom Quartz

Green Quartz

Chalcedony

Chert (often colloquially called Flint) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often colloquially called Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Chalcedony (Common Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Common Agate)

Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Chert (often called Flint when dark) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint when dark)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Green Aventurine (Silicon Dioxide (Quartz variety with Fuchsite inclusions - SiO2)) — mineral

Green Aventurine

Silicon Dioxide (Quartz variety with Fuchsite inclusions - SiO2)

Chert (specifically Flint or Gray Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Flint or Gray Chert)

Silicon Dioxide (SiO2)

Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

Agate Geode (Banded Chalcedony (Silicon Dioxide, SiO2) with Quartz crystals) — mineral

Agate Geode

Banded Chalcedony (Silicon Dioxide, SiO2) with Quartz crystals

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Granodiorite (Granodiorite (Intermediate to Felsic Intrusive Rock)) — igneous

Granodiorite

Granodiorite (Intermediate to Felsic Intrusive Rock)

Quartz (Chert/Chalcedony Variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert/Chalcedony Variety)

Silicon Dioxide (SiO2)

Chert (often called Flint) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert (often called Flint)

Chert (Cryptocrystalline Quartz, SiO2)

Yellow Jasper (Silicon Dioxide (SiO2) with iron hydroxides (Goethite)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

Chert or Flint (polished/water-worn) (Chert (a microcrystalline or cryptocrystalline variety of quartz, SiO2). Flint is a specific variety of chert.) — Sedimentary (most likely, as Chert is a sedimentary rock often found as nodules in limestone or as bedded deposits; however, it can also form by metasomatic replacement, which leans towards metamorphic processes under certain conditions)

Chert or Flint (polished/water-worn)

Chert (a microcrystalline or cryptocrystalline variety of quartz, SiO2). Flint is a specific variety of chert.

Sedimentary (most likely, as Chert is a sedimentary rock often found as nodules in limestone or as bedded deposits; however, it can also form by metasomatic replacement, which leans towards metamorphic processes under certain conditions)

Ferruginous Quartz (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Amazonite (K(AlSi3O8) - Potassium Aluminum Silicate) — mineral

Amazonite

K(AlSi3O8) - Potassium Aluminum Silicate

Leopardite (Quartz porphyry / Quartz monzonite with manganese oxide spots) — igneous

Leopardite

Quartz porphyry / Quartz monzonite with manganese oxide spots

Pink Granite (Granite (Alkali-feldspar granite)) — igneous

Pink Granite

Granite (Alkali-feldspar granite)

Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

Chrysoprase (Silicon dioxide with nickel impurities (SiO2 + Ni)) — mineral

Chrysoprase

Silicon dioxide with nickel impurities (SiO2 + Ni)

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Red Jasper with Quartz Veining (Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide impurities (Hematite)) — sedimentary

Red Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Microcrystalline Quartz with Iron Oxide impurities (Hematite)

Carnelian (Carnelian (SiO2)) — mineral

Carnelian

Carnelian (SiO2)

Quartz (specifically Milky/White Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Milky/White Quartz)

Silicon Dioxide (SiO2)

Pink Granite (Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)) — igneous

Pink Granite

Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)

Red Jasper (Jasper (Silica with Hematite impurities), SiO2) — sedimentary

Red Jasper

Jasper (Silica with Hematite impurities), SiO2

Honey-colored chalcedony (rough agate/chert) (Microcrystalline quartz, SiO₂; likely chalcedony with iron-oxide staining) — mineral

Honey-colored chalcedony (rough agate/chert)

Microcrystalline quartz, SiO₂; likely chalcedony with iron-oxide staining

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Yellow Jasper (Chalcedony (SiO2 with iron oxide inclusions)) — mineral

Yellow Jasper

Chalcedony (SiO2 with iron oxide inclusions)

Chert (specifically Red Chert or Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Red Chert or Jasper)

Microcrystalline Quartz (SiO2)

Chert (specifically varieties like Chalcedony or Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically varieties like Chalcedony or Flint)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Agate/Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Agate/Chalcedony)

Silicon Dioxide (SiO2)

Tourmalinated Quartz (Silicon dioxide (SiO2) with inclusions of Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)) — mineral

Tourmalinated Quartz

Silicon dioxide (SiO2) with inclusions of Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)

Chert (Iron-stained) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

Chert (specifically Cryptocrystalline Quartz) (Silicon dioxide (SiO2)) — sedimentary

Chert (specifically Cryptocrystalline Quartz)

Silicon dioxide (SiO2)

White Jade (Nephrite) (Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)) — metamorphic

White Jade (Nephrite)

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Strawberry Quartz (Quartz with Hematite inclusions (SiO2 + Fe2O3)) — mineral

Strawberry Quartz

Quartz with Hematite inclusions (SiO2 + Fe2O3)

Chert (specifically Yellow Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Yellow Jasper variety)

Silicon Dioxide (SiO2)

Hematoid Quartz (Ferruginous Quartz (SiO2 with Fe2O3 inclusions)) — mineral

Hematoid Quartz

Ferruginous Quartz (SiO2 with Fe2O3 inclusions)