Rock Identifier

Category

Mineral Or Sedimentary (If Chert)

Browse mineral or sedimentary (if chert) specimens identified by the Rock Identifier community.

Learn about Mineral Or Sedimentary (If Chert) in the encyclopedia

Chert

Coal

Claystone

Shale

Marl

Black Shale

Quartzite Sandstone

Quartzite Sandstone

Banded Iron Formation

Banded Iron Formation

Sperrylite

Ironstone

Breccia

Brookite

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

Chert (often called Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Banded chert or silicified sedimentary stone (Microcrystalline quartz (chalcedony), SiO₂, possibly with iron-oxide and clay impurities) — sedimentary

Banded chert or silicified sedimentary stone

Microcrystalline quartz (chalcedony), SiO₂, possibly with iron-oxide and clay impurities

Chert (Nodule) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Nodule)

Silicon Dioxide (SiO2)

Chert / Flint (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2)

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

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

Iron-stained chert (possibly jasper) (Microcrystalline quartz (SiO₂), colored by iron oxides) — sedimentary

Iron-stained chert (possibly jasper)

Microcrystalline quartz (SiO₂), colored by iron oxides

Banded chert pebble (Chert (microcrystalline quartz, SiO₂), likely ribbon-banded chert) — sedimentary

Banded chert pebble

Chert (microcrystalline quartz, SiO₂), likely ribbon-banded chert

Chert (Flint) (Silicon dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon dioxide (SiO2)

Chert (Yellow/Tan Variety) (Chert (SiO2)) — sedimentary

Chert (Yellow/Tan Variety)

Chert (SiO2)

Small rounded gray stone, possibly flint or chert (Likely microcrystalline quartz (SiO₂); exact identification is uncertain from the image) — sedimentary

Small rounded gray stone, possibly flint or chert

Likely microcrystalline quartz (SiO₂); exact identification is uncertain from the image

Flint or dark chert (Microcrystalline quartz (SiO₂), commonly chalcedony with possible minor impurities) — sedimentary

Flint or dark chert

Microcrystalline quartz (SiO₂), commonly chalcedony with possible minor impurities

Weathered chert or jasper nodule (Microcrystalline quartz (SiO₂), likely chert/jasper) — sedimentary

Weathered chert or jasper nodule

Microcrystalline quartz (SiO₂), likely chert/jasper

Chert (Chert (microcrystalline quartz, SiO2)) — Sedimentary

Chert

Chert (microcrystalline quartz, SiO2)

Chert with Quartz Vein (Microcrystalline Quartz (SiO2) with Macrocrystalline Quartz) — sedimentary

Chert with Quartz Vein

Microcrystalline Quartz (SiO2) with Macrocrystalline Quartz

Chert (Jasper/Limonitic Chert) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Limonitic Chert)

Microcrystalline Quartz (SiO2)

Glacially rounded metamorphic boulder (Likely foliated amphibolite or gneiss; exact identification requires a fresh surface and mineral examination) — metamorphic

Glacially rounded metamorphic boulder

Likely foliated amphibolite or gneiss; exact identification requires a fresh surface and mineral examination

Chert / Flint (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert / Flint

Chert (Silicon Dioxide, SiO2)

Chert / Jasper (Silicon Dioxide (SiO2)) — sedimentary

Chert / Jasper

Silicon Dioxide (SiO2)

Chert (Jasper) (Microcrystalline Quartz (SiO2) with Iron Oxide impurities) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2) with Iron Oxide impurities

Chert / Chalcedony (Silicon Dioxide (SiO2)) — sedimentary

Chert / Chalcedony

Silicon Dioxide (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Chert (microcrystalline quartz, SiO2)) — sedimentary

Chert

Chert (microcrystalline quartz, SiO2)

Chert (Yellow Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper)

Microcrystalline Quartz (SiO2)

Likely flint (chert) fragment (Microcrystalline quartz (SiO₂), commonly called chert or flint) — sedimentary

Likely flint (chert) fragment

Microcrystalline quartz (SiO₂), commonly called chert or flint

Banded Chert (Iron-stained) (Microcrystalline Quartz (SiO2) with Iron Oxides) — sedimentary

Banded Chert (Iron-stained)

Microcrystalline Quartz (SiO2) with Iron Oxides

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

Chert / Flint Arrowheads (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint Arrowheads

Cryptocrystalline Quartz (SiO2)

Chert (likely flint) (Microcrystalline quartz (SiO₂), varieties commonly called chert or flint) — sedimentary

Chert (likely flint)

Microcrystalline quartz (SiO₂), varieties commonly called chert or flint

Chert (Chert (Microcrystalline Silica, SiO2)) — sedimentary

Chert

Chert (Microcrystalline Silica, SiO2)

Chert (Chert (Microcrystalline Silica, SiO2)) — sedimentary

Chert

Chert (Microcrystalline Silica, SiO2)

Possible iron-rich chert or slag-like rock (Microcrystalline quartz (SiO₂), possibly iron-stained chert; exact identification is uncertain from the image) — sedimentary

Possible iron-rich chert or slag-like rock

Microcrystalline quartz (SiO₂), possibly iron-stained chert; exact identification is uncertain from the image

Unidentified Dark Mineral or Rock (Indeterminate (Likely Silicon Dioxide or Carbon-based)) — mineral

Unidentified Dark Mineral or Rock

Indeterminate (Likely Silicon Dioxide or Carbon-based)

Polished brown flint/chert nodule (Microcrystalline quartz (SiO₂), commonly called flint or chert) — sedimentary

Polished brown flint/chert nodule

Microcrystalline quartz (SiO₂), commonly called flint or chert

Chert (specifically White Chert or Flint) (Microcrystalline or cryptocrystalline quartz (SiO2)) — sedimentary

Chert (specifically White Chert or Flint)

Microcrystalline or cryptocrystalline quartz (SiO2)

Chert (Vuggy or Fossilliferous) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Vuggy or Fossilliferous)

Microcrystalline Quartz (SiO2)

Chert (Jasper-like Silicate) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper-like Silicate)

Microcrystalline Quartz (SiO2)

Chert / Flint (a variety of Chert) (Chert (SiO2)) — Sedimentary Rock (technically a microcrystalline quartz mineral aggregate)

Chert / Flint (a variety of Chert)

Chert (SiO2)

Sedimentary Rock (technically a microcrystalline quartz mineral aggregate)

Chert (Nodule) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Chert (and Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (and Flint)

Silicon Dioxide (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Quartz-rich chalcedony (likely milky quartz/chert) (Silica, chiefly quartz and microcrystalline quartz (SiO₂); exact variety is uncertain from the photograph) — mineral

Quartz-rich chalcedony (likely milky quartz/chert)

Silica, chiefly quartz and microcrystalline quartz (SiO₂); exact variety is uncertain from the photograph