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

Chert (and Flint)

Silicon Dioxide (SiO2)

Blue-gray flint (chert) fragment (Microcrystalline quartz (SiO₂), commonly called flint or chert) — sedimentary

Blue-gray flint (chert) fragment

Microcrystalline quartz (SiO₂), commonly called flint or chert

Chert or flint (weathered brown variety) (Microcrystalline quartz, SiO₂ (chalcedonic quartz)) — sedimentary

Chert or flint (weathered brown variety)

Microcrystalline quartz, SiO₂ (chalcedonic quartz)

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

Chert (Flint)

Silicon Dioxide (SiO2)

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

Chert / Jasper

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Chert (variations include Flint/Jasper) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (variations include Flint/Jasper)

Chert (Silicon Dioxide, SiO2)

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

Chert (White Chert or Flint)

Microcrystalline Quartz (SiO2)

Geode (unopened) (Chert / Chalcedony Geode (SiO2)) — sedimentary

Geode (unopened)

Chert / Chalcedony Geode (SiO2)

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

Chert (Jasper variation)

Silicon dioxide (SiO2)

Agate (Chert/Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Agate (Chert/Chalcedony)

Silicon Dioxide (SiO2)

Likely tumbled brown jasper or iron-rich chert (Microcrystalline quartz (SiO₂), probably colored by iron oxides) — mineral

Likely tumbled brown jasper or iron-rich chert

Microcrystalline quartz (SiO₂), probably colored by iron oxides

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

Quartz (Jasper / Chert)

Silicon Dioxide (SiO2)

Chert Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Quartz (SiO2)

Small flint/chert fragment (tentative) (Chert, microcrystalline quartz (SiO₂)) — sedimentary

Small flint/chert fragment (tentative)

Chert, microcrystalline quartz (SiO₂)

Rounded iron-rich pebble (Likely ferruginous sandstone or ironstone pebble; exact identification requires testing) — sedimentary

Rounded iron-rich pebble

Likely ferruginous sandstone or ironstone pebble; exact identification requires testing

Banded Chert (likely Flint or Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert (likely Flint or Jasper variety)

Silicon Dioxide (SiO2)

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

Chert (Flint/Jasper variety)

Silicon Dioxide (SiO2)

Brown Chert (Jasper-like) (Silicon Dioxide (SiO2)) — sedimentary

Brown Chert (Jasper-like)

Silicon Dioxide (SiO2)

Chert (Jasper-rich) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper-rich)

Silicon Dioxide (SiO2)

Chert with Quartz Veining (Microcrystalline Silica (SiO2)) — sedimentary

Chert with Quartz Veining

Microcrystalline Silica (SiO2)

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

Chert (Flint Nodules)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Polished black stone, likely black jasper or basalt (Most likely microcrystalline quartz (black jasper/chert), SiO₂; basalt is a plausible alternative) — mineral

Polished black stone, likely black jasper or basalt

Most likely microcrystalline quartz (black jasper/chert), SiO₂; basalt is a plausible alternative

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Chert (Flint)

Silicon Dioxide (SiO2)

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

Chert (Nodule)

Silicon Dioxide (SiO2)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Quartz Geode (Druzy Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz Geode (Druzy Quartz)

Silicon Dioxide (SiO2)

Weathered quartz-rich pebble (tentative) (Likely microcrystalline quartz/chert, SiO₂, possibly a small limestone or fossil fragment) — mineral

Weathered quartz-rich pebble (tentative)

Likely microcrystalline quartz/chert, SiO₂, possibly a small limestone or fossil fragment

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

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert with Quartz Druzy (Microcrystalline Quartz (SiO2) with Drusy Quartz Coating) — sedimentary

Chert with Quartz Druzy

Microcrystalline Quartz (SiO2) with Drusy Quartz Coating

Small tumbled jasper or chert pebbles (Microcrystalline quartz (SiO₂), likely iron-oxide-bearing jasper/chalcedony) — mineral

Small tumbled jasper or chert pebbles

Microcrystalline quartz (SiO₂), likely iron-oxide-bearing jasper/chalcedony

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

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Banded Chert Pebble (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert Pebble

Silicon Dioxide (SiO2)

Chert with Quartz/Calcite Vein (Microcrystalline Silica (SiO2)) — sedimentary

Chert with Quartz/Calcite Vein

Microcrystalline Silica (SiO2)

Tumbled yellow-brown quartz/chert fragment (Microcrystalline quartz (SiO₂), possibly jasper or chalcedony) — mineral

Tumbled yellow-brown quartz/chert fragment

Microcrystalline quartz (SiO₂), possibly jasper or chalcedony

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (containing Iron Oxide) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (containing Iron Oxide)

Microcrystalline Quartz (SiO2)

Reddish weathered rock, possibly jasper or iron-rich chert (Microcrystalline quartz (SiO₂), if jasper/chert; abundant iron oxides such as hematite/goethite) — mineral

Reddish weathered rock, possibly jasper or iron-rich chert

Microcrystalline quartz (SiO₂), if jasper/chert; abundant iron oxides such as hematite/goethite

Chert (Silicon dioxide (SiO2)) — Sedimentary

Chert

Silicon dioxide (SiO2)

Tumbled quartz-rich stone, possibly smoky quartz or chert (Uncertain; likely microcrystalline quartz, SiO₂) — mineral

Tumbled quartz-rich stone, possibly smoky quartz or chert

Uncertain; likely microcrystalline quartz, SiO₂