Rock Identifier

Category

Sedimentary (Microcrystalline Quartz)

Browse sedimentary (microcrystalline quartz) specimens identified by the Rock Identifier community.

Herkimer Diamond (Quartz (Silicon Dioxide, SiO2)) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Quartzite (River Cobble) (Quartzite (primarily SiO2)) — metamorphic

Quartzite (River Cobble)

Quartzite (primarily SiO2)

Sandstone (Arenite (SiO2 based typically)) — sedimentary

Sandstone

Arenite (SiO2 based typically)

Botryoidal Chalcedony (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony

Silicon Dioxide (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Yellow Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

African Turquoise (African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)) — sedimentary

African Turquoise

African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)

Banded Chert (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert

Silicon Dioxide (SiO2)

Kambaba Jasper (Stromatolite / Fossilized Algae (Rhyolitic structure)) — sedimentary

Kambaba Jasper

Stromatolite / Fossilized Algae (Rhyolitic structure)

Chert (Jasper/Flint variety) (Microcrystalline silicon dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline silicon dioxide (SiO2)

Chert (Grey-Green Flint) (Microcrystalline silicon dioxide (SiO2)) — sedimentary

Chert (Grey-Green Flint)

Microcrystalline silicon dioxide (SiO2)

Chert (Jasper/Flint variety) (Microcrystalline silicon dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline silicon dioxide (SiO2)

Sandstone (Greywacke/Lithic Sandstone) (Arenite / Lithic Sandstone) — sedimentary

Sandstone (Greywacke/Lithic Sandstone)

Arenite / Lithic Sandstone

Sandstone (Weathered Pebble) (Arenite (SiO2 primarily)) — sedimentary

Sandstone (Weathered Pebble)

Arenite (SiO2 primarily)

Petrified Wood (Silicified Wood (primarily SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2)

Gneiss (Gneiss (high-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (high-grade metamorphic rock)

Green Aventurine (Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — metamorphic

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Green Aventurine (Fuchsite-bearing Quartzite) (Silicon Dioxide (SiO2) with Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine (Fuchsite-bearing Quartzite)

Silicon Dioxide (SiO2) with Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Quartzite Pebble (with Iron Staining) (Quartzite (SiO2)) — metamorphic

Quartzite Pebble (with Iron Staining)

Quartzite (SiO2)

Jasper containing epidote (Unakite-like) (Epidotized Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Jasper containing epidote (Unakite-like)

Epidotized Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Pebble or Cobble (likely composed of sandstone or conglomerate) (Clastic Sedimentary Rock (specific name like sandstone, conglomerate, or breccia would require microscopic analysis of clast size and angularity)) — Sedimentary Rock (possibly a conglomerate or coarse-grained sandstone)

Pebble or Cobble (likely composed of sandstone or conglomerate)

Clastic Sedimentary Rock (specific name like sandstone, conglomerate, or breccia would require microscopic analysis of clast size and angularity)

Sedimentary Rock (possibly a conglomerate or coarse-grained sandstone)

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Carnelian (Red Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Red Chalcedony)

Silicon Dioxide (SiO2)

Carnelian (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

Ironstone (likely Limonite or Goethite) (Ferruginous sedimentary rock (FeO(OH)·nH2O)) — sedimentary

Ironstone (likely Limonite or Goethite)

Ferruginous sedimentary rock (FeO(OH)·nH2O)

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

Chalcedony (Agate Nodules)

Silicon Dioxide (SiO2)

Carnelian (Carnelian (SiO2 - Chalcedony colored by Iron Oxide)) — mineral

Carnelian

Carnelian (SiO2 - Chalcedony colored by Iron Oxide)

Riverstone Jasper (Chert variant) (Silicon Dioxide (SiO2)) — sedimentary

Riverstone Jasper (Chert variant)

Silicon Dioxide (SiO2)

Quartz (Druzy on Matrix) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy on Matrix)

Silicon Dioxide (SiO2)

Carnelian (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Chalcedony)

Silicon Dioxide (SiO2)

Arkosic Sandstone (Arkose) — sedimentary

Arkosic Sandstone

Arkose

Arkosic Sandstone (Arkose) — sedimentary

Arkosic Sandstone

Arkose

Sandstone (Iron-stained) (Clastic sedimentary rock (SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Iron-stained)

Clastic sedimentary rock (SiO2 with Fe2O3 staining)

Clear Quartz (Rock Crystal) (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz (Rock Crystal)

Quartz (Silicon Dioxide, SiO2)

Limestone with Quartz or Calcite Veining (Calcium Carbonate (CaCO3) matrix with SiO2 or CaCO3 inclusions) — sedimentary

Limestone with Quartz or Calcite Veining

Calcium Carbonate (CaCO3) matrix with SiO2 or CaCO3 inclusions

Chert (specifically Flint) (Chert (SiO2)) — sedimentary

Chert (specifically Flint)

Chert (SiO2)