Chert (Flint Nodules)
Microcrystalline Quartz (SiO2)
sedimentary
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is microcrystalline quartz) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz) in the encyclopedia
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Blue lace agate (tumbled)
Microcrystalline quartz, SiO₂ (chalcedony variety)
mineral
Red jasper
Microcrystalline quartz (SiO₂), iron-oxide-rich chalcedony
mineral
Tumbled jasper (likely picture jasper or iron-rich jasper)
Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides
sedimentary
Yellow Jasper
Chalcedony (Silicon Dioxide with Iron inclusions), SiO2
sedimentary
Agate
Agate (Silicon Dioxide, SiO2)
mineral
Chalcedony
Silicon Dioxide (SiO2)
mineral
Tumbled red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly colored by iron oxides
mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Gray Agate with Druzy Quartz Geode
Cryptocrystalline Quartz (SiO2)
mineral
Jasper
Silicon dioxide (Quartz variety), SiO2
sedimentary
Polished blue banded agate slice
Chalcedony (microcrystalline quartz), SiO₂, commonly with trace iron and other coloring elements
mineral
Tumbled Chalcedony
Quartz (Silicon Dioxide - SiO2)
mineral
Agate
SiO2 (Silicon dioxide, cryptocrystalline quartz)
mineral
Agate
Chalcedony (cryptocrystalline variety of Quartz, SiO2)
mineral
Agate (or Chalcedony)
SiO2 (Silicon Dioxide) - a cryptocrystalline variety of quartz
Mineral
Yellow Jasper
SiO2 (Silicon Dioxide)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Polished carnelian/chalcedony agate
Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide coloring
mineral
Chert (often called Flint or Chalcedony Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Tumbled chalcedony or agate pebble
Microcrystalline quartz (SiO₂), likely chalcedony with possible iron-oxide inclusions
mineral
Red Jasper with Quartz
Microcrystalline Quartz (SiO2)
sedimentary
Likely tumbled jasper or iron-rich chert
Microcrystalline quartz (SiO₂), potentially hematite/goethite-bearing
mineral
Agate (Geode nodule fragment)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled banded jasper, likely brecciated jasper
Microcrystalline quartz (SiO₂) with iron-oxide and clay inclusions
mineral
Yellow Chalcedony (Carnelian / Agate Pebbles)
Silicon Dioxide (SiO2)
mineral
Tumbled Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Chalcedony (Agate / Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Agate (specifically crazy lace agate / orbicular agate node)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Yellow Chalcedony (Agate/Chert)
Cryptocrystalline Quartz (SiO2)
mineral
Mookaite Jasper
Siliceous sedimentary rock (variety of Jasper/Chert)
Sedimentary Rock
Agate Geode Node
Cryptocrystalline Quartz (SiO2)
mineral
Banded agate (likely carnelian/chalcedony)
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide coloration
mineral
Carnelian Agate
Silicon Dioxide (Chalcedony variety)
mineral
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2)
Sedimentary Rock
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Banded Agate (specifically Lake Superior Agate type)
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Agate (specifically Oco or Banded Agate)
Agate (a variety of Chalcedony), SiO2 (Silicon Dioxide)
mineral
Jasper (specifically Picture Jasper or Landscape Jasper)
Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral