Chert (Nodule)
Silicon Dioxide (SiO2)
Category
Browse sedimentary rock specimens identified by the Rock Identifier community.
Chert (Nodule)
Silicon Dioxide (SiO2)
Chert (Jasper/Flint Pebble)
Microcrystalline quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2)
Chert Nodule (Flint)
Chert (Cryptocrystalline Silica - SiO2)
Limonite Concretion
Goethite-rich Concretion (FeO(OH))
Fossilized Bone Fragment
Permineralized Vertebrate Fossil (Hydroxyapatite replaced by Minerals)
Travertine
Travertine (CaCO3 - Calcium Carbonate)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Red Jasper
Chalcedony (SiO2) with iron inclusions
Travertine
Terrestrial Sedimentary Form of Calcium Carbonate (CaCO3)
Sandstone (Pebble)
Sandstone (arenite, arkose, wacke depending on composition)
Sandstone
Arenite (SiO2 principal)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Pink Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Chert (Nodule)
Chert (composition: SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper/Flint)
Silicon Dioxide (SiO2)
Yellow Chert
Microcrystalline Quartz (SiO2)
Chert (specifically Flint)
Microcrystalline quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Ironstone Concretion (Limonite/Goethite)
Goethite-rich Concretion (FeO(OH))
Chert
Chert (microcrystalline quartz, SiO2)
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (and Jasper blend)
Chert (Microcrystalline Quartz, SiO2)
Chert (or Carnelian Agate)
Microcrystalline Quartz (SiO2)
Chert (Yellow/Brown Jasper)
Silicon Dioxide (SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Silica (SiO2)
Chert / Flint
Chert (varieties include Flint)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Concretion
Septarian Concretion (Clay-Ironstone Nodules)
Sandstone with Liesegang Rings
Liesegang-banded Sandstone
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Agate variety)
Cryptocrystalline Quartz (SiO2)
Chert (Flint variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Jasper)
Chert / Microcrystalline Quartz (SiO2)
White Onyx (Marble Onyx)
Calcite (CaCO3) - Banded Calcium Carbonate
Snakeskin Jasper
Silicon Dioxide (SiO2) with iron oxide and calcium carbonate inclusions
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Yellow or River Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Limonite Concretion
Goethite-Limonite (FeO(OH)·nH2O)