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

Mookaite Jasper (Silicified Radiolarite (SiO2)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2)

Chert (Yellow Jasper/Flint) (Chert (Microcrystalline Silicon Dioxide, SiO2)) — sedimentary

Chert (Yellow Jasper/Flint)

Chert (Microcrystalline Silicon Dioxide, SiO2)

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

Chert

Chert (Microcrystalline Quartz, SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Chert (Microcrystalline silica (SiO2)) — sedimentary

Chert

Microcrystalline silica (SiO2)

Tumbled jasper or iron-rich chert (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions) — mineral

Tumbled jasper or iron-rich chert

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions

Chert / Flint Conglomerate (Silicified Sedimentary Breccia (primarily SiO2)) — sedimentary

Chert / Flint Conglomerate

Silicified Sedimentary Breccia (primarily SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Iron-stained) (Microcrystalline silica (SiO2) with trace Iron oxide (Fe2O3)) — sedimentary

Chert (Iron-stained)

Microcrystalline silica (SiO2) with trace Iron oxide (Fe2O3)

Chert (Flint variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Iron-stained) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Iron-stained)

Silicon Dioxide (SiO2)

Flint or chert fragment (Microcrystalline quartz (SiO₂), commonly chalcedony with possible iron-oxide impurities) — sedimentary

Flint or chert fragment

Microcrystalline quartz (SiO₂), commonly chalcedony with possible iron-oxide impurities

Chert Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Quartz (SiO2)

Likely tumbled brown chalcedony or jasper (Microcrystalline quartz, SiO₂; possibly iron-rich jasper) — mineral

Likely tumbled brown chalcedony or jasper

Microcrystalline quartz, SiO₂; possibly iron-rich jasper

Chert (Common Opal or Flint variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Common Opal or Flint variant)

Microcrystalline Quartz (SiO2)

Chert (Septarian Concretion/Nodule) (Microcrystalline silica (SiO2) with carbonate mineral veining) — sedimentary

Chert (Septarian Concretion/Nodule)

Microcrystalline silica (SiO2) with carbonate mineral veining

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

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Chert (Cherty Limestone / Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Cherty Limestone / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (with Quartz veins) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Quartz veins)

Microcrystalline Quartz (SiO2)

Banded Chert / Mookaite Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert / Mookaite Jasper

Microcrystalline Quartz (SiO2)

Chert (Silicon dioxide (SiO2)) — sedimentary

Chert

Silicon dioxide (SiO2)

Tumbled Flint / Chert (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Tumbled Flint / Chert

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Chert Nodule (Flint)

Silicon Dioxide (SiO2)

Chert (flint) fragment (Microcrystalline quartz (SiO₂), commonly called chert; “flint” is a variety of chert) — sedimentary

Chert (flint) fragment

Microcrystalline quartz (SiO₂), commonly called chert; “flint” is a variety of chert

Botryoidal Chalcedony (likely Chert or Agatized Coral) (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony (likely Chert or Agatized Coral)

Silicon Dioxide (SiO2)

Red jasper (likely brecciated jasper) (Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides) — mineral

Red jasper (likely brecciated jasper)

Jasper, microcrystalline quartz (SiO₂), colored mainly by iron oxides

Alluvial stream gravel (mixed rock specimens) (Polymictic fluvial deposit; likely mixtures of quartzite, sandstone, shale, chert, basalt, and granite-derived minerals) — sedimentary

Alluvial stream gravel (mixed rock specimens)

Polymictic fluvial deposit; likely mixtures of quartzite, sandstone, shale, chert, basalt, and granite-derived minerals

Chert (specifically Blue Chert or Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Blue Chert or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

Likely weathered flint or chert nodule (Microcrystalline quartz (SiO₂), commonly with chalcedony and impurities) — sedimentary

Likely weathered flint or chert nodule

Microcrystalline quartz (SiO₂), commonly with chalcedony and impurities

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

Weathered flint or chert fragment

Microcrystalline quartz (SiO₂), commonly called chert or flint

Chert or flint fragment (Microcrystalline quartz (SiO₂), often with chalcedony) — sedimentary

Chert or flint fragment

Microcrystalline quartz (SiO₂), often with chalcedony

Chert or flint (Microcrystalline quartz (SiO₂), commonly chalcedony with possible opal or clay impurities) — sedimentary

Chert or flint

Microcrystalline quartz (SiO₂), commonly chalcedony with possible opal or clay impurities

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

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

Chert / Flint

Microcrystalline Quartz (SiO2)

Chert (Gravel Fragment) (Silicon dioxide (SiO2)) — sedimentary

Chert (Gravel Fragment)

Silicon dioxide (SiO2)

Chert (and Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (and Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert / River Pebble (Chert (SiO2)) — sedimentary

Chert / River Pebble

Chert (SiO2)

Ferruginous Chert (Microcrystalline Quartz (SiO2) with Iron Oxides) — sedimentary

Ferruginous Chert

Microcrystalline Quartz (SiO2) with Iron Oxides