Rock Identifier

Category

Mineraloid (Cryptocrystalline Quartz)

Browse mineraloid (cryptocrystalline quartz) specimens identified by the Rock Identifier community.

Learn about Mineraloid (Cryptocrystalline Quartz) in the encyclopedia

Chalcedony

Black Onyx

Landscape Agate

Landscape Agate

Tube Agate

Sweetwater Agate

Sweetwater Agate

Frost Agate

Coldwater Agate

Honey Agate

Zebra Agate

Flame Agate

Feather Agate

Cathedral Agate

Cathedral Agate

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

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint) (Microcrystalline to cryptocrystalline quartz (SiO2)) — sedimentary

Chert (often called Flint)

Microcrystalline to cryptocrystalline quartz (SiO2)

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

Chert (varieties include Flint and Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert Pebble

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Iron-stained) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (variations include Flint/Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (specifically Jasper or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (variations include Flint or Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variations include Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (specifically Flint or Common Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint in this context) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint in this context)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (variations include Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variations include Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (specifically White Chert or Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Yellow Jasper (Opaque Cryptocrystalline Quartz (SiO2)) — sedimentary

Yellow Jasper

Opaque Cryptocrystalline Quartz (SiO2)

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

Chert (often called Flint or Jasper when pigmented)

Microcrystalline or cryptocrystalline Quartz (SiO2)

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

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (White Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint when dark) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint when dark)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (Chert / Flint Variety)

Microcrystalline / Cryptocrystalline Quartz (SiO2)

Chert (also known as Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (also known as Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Tumbled blue chalcedony (likely blue quartz/chalcedony) (Cryptocrystalline silica, SiO₂; likely chalcedony, possibly dyed or surface-coated) — mineral

Tumbled blue chalcedony (likely blue quartz/chalcedony)

Cryptocrystalline silica, SiO₂; likely chalcedony, possibly dyed or surface-coated

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

Green Chert

Chert (Cryptocrystalline Quartz, SiO2)

Chert (Yellow/Tan variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow/Tan variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

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

Chert (often called Flint)

Chert (Cryptocrystalline Quartz, SiO2)

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

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chalcedony (Tumbled Pebble) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Tumbled Pebble)

Silicon Dioxide (SiO2)

Dark flint or chert fragment (Microcrystalline quartz (SiO₂), commonly called flint when dark and nodular) — sedimentary

Dark flint or chert fragment

Microcrystalline quartz (SiO₂), commonly called flint when dark and nodular

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Banded Agate (Cryptocrystalline variety of Quartz (SiO2)) — sedimentary

Banded Agate

Cryptocrystalline variety of Quartz (SiO2)

Banded Agate (Agate (Cryptocrystalline Quartz, SiO2)) — mineral

Banded Agate

Agate (Cryptocrystalline Quartz, SiO2)

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

Chert (Chalcedony/Flint)

Silicon Dioxide (SiO2)

Quartz with Chalcedony (Silicon dioxide (SiO2)) — mineral

Quartz with Chalcedony

Silicon dioxide (SiO2)

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

Chert / Jasper

Silicon Dioxide (SiO2)

Carved lavender chalcedony (likely agate) animal figurine (Microcrystalline quartz, SiO₂; probable chalcedony or pale lavender agate) — gemstone

Carved lavender chalcedony (likely agate) animal figurine

Microcrystalline quartz, SiO₂; probable chalcedony or pale lavender agate

Quartz Veined Jasper (Microcrystalline quartz (SiO2) with calcium carbonate or quartz veins) — sedimentary

Quartz Veined Jasper

Microcrystalline quartz (SiO2) with calcium carbonate or quartz veins