Mookaite Jasper
Silicified radiolarite (SiO2)
sedimentary
Category
Sedimentary Rock (Technically Chert, A Microcrystalline Quartz)
Browse sedimentary rock (technically chert, a microcrystalline quartz) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Technically Chert, A Microcrystalline Quartz) in the encyclopedia
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Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Chert (Grey Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
River Rocks (Black)
Various lithologies (e.g., basalt, chert, obsidian for black varieties), mechanically rounded clasts
Sedimentary
Jasper with Quartz Veins
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (Jasper/Chalcedony)
Microcrystalline Silica (SiO2)
sedimentary
Chert / Flint Nodules
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Jasper
Silicon Dioxide (SiO2)
Mineral
Yellow Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Yellow Jasper
Cryptocrystalline quartz (SiO2) with iron inclusions
sedimentary
Chert (Jasper/Common Opal transition)
Microcrystalline Quartz (SiO2) with iron oxide inclusions
sedimentary
Green Aventurine
Aventurine (variety of Quartz - SiO2)
Mineral_Rock
Dragon Blood Jasper
Epidote with Red Piedmontite (Chalcedony/Quartz variant)
sedimentary
Quartz (likely Jasper or Chert variety)
Quartz (SiO₂)
Mineral
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Howlite and Tree Agate
Calcium Borosilicate Hydroxide (Howlite) and Silicon Dioxide (Agate/Quartz)
mineral
Banded Chert
Silicon Dioxide (SiO2)
sedimentary
Dalmation Stone (Dalmation Jasper)
Peralkaline Rock with Feldspar and Arfvedsonite
igneous
Jasper
Silicon dioxide (SiO2)
sedimentary
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Dalmatian Stone (often misnamed Dalmatian Jasper)
Aplite (with hornblende/arfvedsonite inclusions)
igneous
Septarian Nodule
Septarian Concretion (CaCO3, CaMg(CO3)2, SiO2)
sedimentary
Quartz (Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Quartz (Chert/Chunky Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chert (Jasper)
Silicon dioxide (SiO2)
sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
River Pebble (Likely Quartzite or Chert)
Quartzite (primarily SiO2)
metamorphic
Red Jasper
Jasper (variety of Chert/Chalcedony, formula SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite or Limonite inclusions
sedimentary
Chert (Smooth River Siltstone/Basalt variant)
Silicon dioxide (SiO2) / Microcrystalline Quartz
sedimentary
Quartzite Pebble
Metamorphic Quartz-rich Rock (SiO2)
metamorphic
Chert (Flint Nodules)
Silicon Dioxide (SiO2)
sedimentary
Banded Iron Formation
Banded Iron Formation (BIF)
Sedimentary Rock
Yellow Quartzite (River Stone)
Quartzite (primarily SiO2)
metamorphic
Picasso Jasper (or Picasso Marble)
Metamorphosed Limestone (Calcium Carbonate, CaCO3, with impurities)
metamorphic
Yellow Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Green Aventurine (Green Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Chert
Microcrystalline silica (SiO2)
sedimentary
Banded Chert (Ironstone/Jasper)
Cryptocrystalline Quartz (SiO2) with Iron Oxides
sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary