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

Weathered quartz-rich rock fragment (Likely milky quartz–bearing quartzite or silica-rich chert; exact identification requires testing) — mineral

Weathered quartz-rich rock fragment

Likely milky quartz–bearing quartzite or silica-rich chert; exact identification requires testing

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

Jasper (Chert)

SiO2 (Microcrystalline Quartz with Iron Oxide impurities)

Black Shale (Argillaceous Chert/Shale) — sedimentary

Black Shale

Argillaceous Chert/Shale

Weathered chert or chalcedony pebble (Microcrystalline quartz (SiO₂), likely chert/chalcedony) — sedimentary

Weathered chert or chalcedony pebble

Microcrystalline quartz (SiO₂), likely chert/chalcedony

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

Chert (Chert / Flint nodule)

Silicon Dioxide (SiO2)

Chert (White Chert / Flint) (Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)) — sedimentary

Chert (White Chert / Flint)

Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)

Iron-stained chert (flint) nodule (Microcrystalline quartz (SiO₂), with iron-oxide staining) — sedimentary

Iron-stained chert (flint) nodule

Microcrystalline quartz (SiO₂), with iron-oxide staining

Chert (Chert (microcrystalline quartz)) — sedimentary

Chert

Chert (microcrystalline quartz)

Chert (Jasper variety) (Silicon dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Tumbled blue stone and polished red-brown stone (Likely sodalite or blue aventurine; red specimen possibly jasper or polished flint/chert) — mineral

Tumbled blue stone and polished red-brown stone

Likely sodalite or blue aventurine; red specimen possibly jasper or polished flint/chert

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

Chert / Chalcedony

Silicon Dioxide (SiO2)

Iron-rich brown chert or weathered ironstone (Chert (microcrystalline quartz, SiO₂), possibly limonitic/goethitic ironstone) — sedimentary

Iron-rich brown chert or weathered ironstone

Chert (microcrystalline quartz, SiO₂), possibly limonitic/goethitic ironstone

Limestone with Chert (Calcium Carbonate (CaCO3) with Silica (SiO2) inclusions) — sedimentary

Limestone with Chert

Calcium Carbonate (CaCO3) with Silica (SiO2) inclusions

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

Flint (chert)

Microcrystalline quartz (SiO₂), commonly called chert or flint

Iron-stained weathered stone (tentative) (Undetermined; possibly weathered iron-rich basalt or concretion) — mineral

Iron-stained weathered stone (tentative)

Undetermined; possibly weathered iron-rich basalt or concretion

Chert (Flint) (Microcrystalline quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline quartz (SiO2)

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

Chert Pebble

Chert (Microcrystalline Quartz, SiO2)

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

Chert / Flint

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper)

Silicon dioxide (SiO2)

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

Chert (Jasper/Quartzite variant)

Silicon Dioxide (SiO2)

Chert (Grey Chert) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Grey Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chalcedony (Chert/Flint)

Silicon Dioxide (SiO2)

Chert (with small quartz vug) (Chert (SiO2)) — sedimentary

Chert (with small quartz vug)

Chert (SiO2)

Tumbled brown mineral/rock specimen (Indeterminate from image; likely brown jasper, chert, or iron-stained quartzite) — mineral

Tumbled brown mineral/rock specimen

Indeterminate from image; likely brown jasper, chert, or iron-stained quartzite

Tumbled brown chert or jasper (Microcrystalline quartz (SiO₂), likely iron-stained chert/jasper) — sedimentary

Tumbled brown chert or jasper

Microcrystalline quartz (SiO₂), likely iron-stained chert/jasper

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

Weathered flint/chert nodule

Microcrystalline quartz (SiO₂), likely chert or flint

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

Chert (White Chert)

Silicon Dioxide (SiO2)

Chert Breccia (Brecciated Chert) — sedimentary

Chert Breccia

Brecciated Chert

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

Chert (Flint)

Cryptocrystalline Quartz (SiO2)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper)

Microcrystalline Quartz (SiO2)

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

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Greenstone / Chert (Cryptocrystalline Quartz (SiO2) or Altered Basalt) — sedimentary or metamorphic

Greenstone / Chert

Cryptocrystalline Quartz (SiO2) or Altered Basalt

sedimentary or metamorphic

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

Chert / Jasper

Silicon Dioxide (SiO2)

Chert (Jasper) (Microcrystalline Quartz (SiO2) with iron oxide inclusions) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2) with iron oxide inclusions

Chert (Nodule) (Chert (composed of Microcrystalline Silica/SiO2)) — sedimentary

Chert (Nodule)

Chert (composed of Microcrystalline Silica/SiO2)

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

Chert (Flint)

Chert (Cryptocrystalline Quartz, SiO2)

Likely quartz-rich sedimentary pebbles (Quartz arenite or chert-like siliceous rock; exact identification is uncertain from the photograph) — sedimentary

Likely quartz-rich sedimentary pebbles

Quartz arenite or chert-like siliceous rock; exact identification is uncertain from the photograph

Chert with Quartz Vein (Silicon dioxide (SiO2)) — sedimentary

Chert with Quartz Vein

Silicon dioxide (SiO2)

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

Chert (specifically Gray/Blue Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)