Rock Identifier

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Sedimentary Rock (Technically Chert, A Microcrystalline Quartz)

Browse sedimentary rock (technically chert, a microcrystalline quartz) specimens identified by the Rock Identifier community.

Learn about Sedimentary Rock (Technically Chert, A Microcrystalline Quartz) in the encyclopedia

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Chert

Chert

Quartz Schist

Quartz Schist

Clear Quartz

Clear Quartz

Tourmalinated Quartz

Tourmalinated Quartz

Rutilated Quartz

Rutilated Quartz

Asphalt Rock

Asphalt Rock

Rock Gypsum

Rock Gypsum

Quartz-mica Schist

Quartz-mica Schist

Porcelanite

Porcelanite

Radiolarite

Radiolarite

Flint

Flint

Breccia

Breccia

Bumblebee Jasper (Calcite-bearing Volcanic Tuff containing Orpiment (As2S3) and Realgar (As4S4)) — sedimentary

Bumblebee Jasper

Calcite-bearing Volcanic Tuff containing Orpiment (As2S3) and Realgar (As4S4)

sedimentary
Yellow Chert (River Stone) (Chert (SiO2)) — sedimentary

Yellow Chert (River Stone)

Chert (SiO2)

sedimentary
Sandstone with Quartz Vein (Arenite with Quartz (SiO2) Infilling) — sedimentary

Sandstone with Quartz Vein

Arenite with Quartz (SiO2) Infilling

sedimentary
Dalmatian Stone (Peralkaline Feldsphathic Igneous Rock) — igneous

Dalmatian Stone

Peralkaline Feldsphathic Igneous Rock

igneous
Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

metamorphic
Agate (SiO2 (Silicon Dioxide - Chalcedony)) — Mineral / Sedimentary

Agate

SiO2 (Silicon Dioxide - Chalcedony)

Mineral / Sedimentary
River Pebble (Quartz/Jasper) (Silicon Dioxide (SiO2)) — sedimentary

River Pebble (Quartz/Jasper)

Silicon Dioxide (SiO2)

sedimentary
Red Jasper (Chert) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper (Chert)

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary
Geode (Chert or Quartz Nodule) (Silicon Dioxide (SiO2)) — sedimentary

Geode (Chert or Quartz Nodule)

Silicon Dioxide (SiO2)

sedimentary
Lavender Quartz (appearing as beads) and Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Lavender Quartz (appearing as beads) and Druzy Quartz

Silicon Dioxide (SiO2)

mineral
Jasper (specifically Bloodstone or Heliotrope variety) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper (specifically Bloodstone or Heliotrope variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Chert (Flint)

Chert (Cryptocrystalline Quartz, SiO2)

sedimentary
Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions (SiO2)) — sedimentary

Dendritic Agate

Silicon Dioxide with Manganese or Iron Oxide inclusions (SiO2)

sedimentary
Hag Stone (Porous sedimentary rock (typically Flint, Chert, or Sandstone) with naturally occurring holes) — sedimentary

Hag Stone

Porous sedimentary rock (typically Flint, Chert, or Sandstone) with naturally occurring holes

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Banded Iron Formation (BIF) / Red Jasper with Hematite (Ferruginous Chert (primarily Quartz [SiO2] and Hematite [Fe2O3])) — sedimentary

Banded Iron Formation (BIF) / Red Jasper with Hematite

Ferruginous Chert (primarily Quartz [SiO2] and Hematite [Fe2O3])

sedimentary
Chert (Silicon dioxide (SiO2)) — Sedimentary

Chert

Silicon dioxide (SiO2)

Sedimentary
Agate (Agate (Microcrystalline Quartz, SiO2)) — mineral

Agate

Agate (Microcrystalline Quartz, SiO2)

mineral
Red Jasper (Quartz) (Silicon Dioxide (SiO2) with Iron impurities) — sedimentary

Red Jasper (Quartz)

Silicon Dioxide (SiO2) with Iron impurities

sedimentary
Moss Agate (Silicon Dioxide with inclusions (SiO2 + impurities)) — mineral

Moss Agate

Silicon Dioxide with inclusions (SiO2 + impurities)

mineral
Dalmatian Stone (Dalmatian Jasper) (Peralkaline Quartz-Feldspar Rock with Arfvedsonite) — igneous

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

igneous
Chert Breccia (with Iron Staining) (Microcrystalline Quartz (SiO2) with iron oxides (Limonite/Goethite)) — sedimentary

Chert Breccia (with Iron Staining)

Microcrystalline Quartz (SiO2) with iron oxides (Limonite/Goethite)

sedimentary
Chert (Basanite) (Chert (Microcrystalline SiO2)) — sedimentary

Chert (Basanite)

Chert (Microcrystalline SiO2)

sedimentary
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Quartzite Pebbles or River Rock (Quartzite / Microcrystalline Quartz (SiO2)) — sedimentary

Quartzite Pebbles or River Rock

Quartzite / Microcrystalline Quartz (SiO2)

sedimentary
Sandstone (Quartz Sandstone (predominantly)) — Sedimentary

Sandstone

Quartz Sandstone (predominantly)

Sedimentary
Jasper (Chocolate or Brown Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Jasper (Chocolate or Brown Jasper)

Silicon Dioxide (SiO2)

sedimentary
Polished Black Obsidian (Volcanic Glass (70-75% SiO2)) — igneous

Polished Black Obsidian

Volcanic Glass (70-75% SiO2)

igneous
Mahogany Obsidian (Volcanic Glass with Hematite or Magnetite inclusions (SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite or Magnetite inclusions (SiO2 + Fe2O3)

igneous
Jasper-Agate (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper-Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

sedimentary
Chert Nodules (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert Nodules

Chert (Silicon Dioxide, SiO2)

sedimentary
Red Jasper (Jasper (Silicon Dioxide) - SiO2) — sedimentary

Red Jasper

Jasper (Silicon Dioxide) - SiO2

sedimentary
Dalmatian Jasper (Peralkaline Quartz-Feldspar Porphyritic Rock (Dalmatian Stone)) — igneous

Dalmatian Jasper

Peralkaline Quartz-Feldspar Porphyritic Rock (Dalmatian Stone)

igneous
Zebra Stone (Banded Chert or Limestone) (Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) inclusions) — sedimentary

Zebra Stone (Banded Chert or Limestone)

Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) inclusions

sedimentary
Scoria (Vesicular Basaltic Rock) — igneous

Scoria

Vesicular Basaltic Rock

igneous
Gold-bearing Quartz Vein in Mafic Rock (Hydrothermal Quartz Vein within Greenschist/Amphibolite facies (SiO2 with Au)) — metamorphic

Gold-bearing Quartz Vein in Mafic Rock

Hydrothermal Quartz Vein within Greenschist/Amphibolite facies (SiO2 with Au)

metamorphic
Sandstone with Dendritic Manganese Oxides (Sandstone (SiO2 predominant) with Oxide Dendrites (MnO2)) — sedimentary

Sandstone with Dendritic Manganese Oxides

Sandstone (SiO2 predominant) with Oxide Dendrites (MnO2)

sedimentary
Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary
Jasper with Quartz inclusion (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper with Quartz inclusion

Silicon Dioxide (SiO2) - Microcrystalline Quartz

sedimentary
River Chalcedony / Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

River Chalcedony / Agate

Chalcedony (Silicon Dioxide, SiO2)

mineral
Green Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Green Jasper

Silicon Dioxide (SiO2) with impurities

sedimentary
Dalmatian Stone (Peralkaline Feldsphathic Igneous Rock) — igneous

Dalmatian Stone

Peralkaline Feldsphathic Igneous Rock

igneous