Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
Category
Browse sedimentary rock (specifically a chemical sedimentary rock, or a chert if considered purely mineral aggregate) specimens identified by the Rock Identifier community.
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Mookaite Jasper
Siliceous sedimentary rock (variety of Jasper/Chert)
Gneiss (specifically a weathered or stream-worn specimen)
Gneiss (Foliated Metamorphic Rock)
Chert (Pebble)
Microcrystalline silica (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Limestone (Micritic)
Sedimentary rock mainly composed of Calcium Carbonate (CaCO3)
Chert (Jasper variation)
Silicon Dioxide (SiO2)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Banded Chert (River Stone)
Silicon Dioxide (SiO2)
Sandstone (Quartz Arenite)
Sandstone (Chemical formula: primarily SiO2)
Chert (and/or River Pebble)
Microcrystalline silica (SiO2)
Chert (White/Light Tan)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint) Pebble
Microcrystalline Quartz (SiO2)
Gneiss
Gneiss (Metamorphic rock)
Chert (often called Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Chert (Flint)
Chert (Cryptocrystalline Quartz, SiO2)
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2)
Chert (often called Jasper or River Siltstone)
Microcrystalline Quartz (SiO2)
Sandstone (Ferruginous)
Arenite with Iron Oxide staining (Fe2O3)
Limestone with Calcite Veining
Calcium Carbonate (CaCO3)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Gneiss (specifically Granitic Gneiss)
Gneissic Metamorphic Rock
Chert (Yellow Jasper/Flint)
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
Chert (Iron-stained)
Chert (SiO2)
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
Mookaite Jasper
Silicified Radiolarite (SiO2)
Sandstone (specifically an Iron-Concretion)
Arenite with Iron Oxide (Limonite/Goethite) cementation
Chert / Jasper
Microcrystalline Quartz (SiO2)
Chert Breccia
Brecciated Chert (Microcrystalline SiO2)
Chert (variations include Flint or Jasper)
Cryptocrystalline Quartz (SiO2)
Banded Agate (Onyx variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Chert (Iron-Stained)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Chert (SiO2)
Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Limestone (specifically Grainstone or Micrite)
Calcium Carbonate (CaCO3)
Chert (Nodule)
Microcrystalline Quartz (SiO2)