Chert / Flint
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
Chert / Flint
Microcrystalline Quartz (SiO2)
Chert (Flint / Jasper variant)
Microcrystalline Quartz (SiO2)
Black Chert River Stone
Cryptocrystalline Quartz (SiO2)
Chert (Flint Arrowhead)
Silicon Dioxide (SiO2)
Chert (Flint Nodules)
Cryptocrystalline Quartz (SiO2)
Flint
SiO2 (Microcrystalline Quartz / Chert)
Coquina / Fossiliferous Limestone
Calcareous bioclastic sedimentary rock (CaCO3)
Mica Schist
Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Beach Pebble (Chalcedony / Chert)
Silicon Dioxide (SiO2)
Chert (Black Flint)
Silicon Dioxide (SiO2)
Chert (Quartz Variety)
Chert (Silicon Dioxide, SiO2)
Fossilized Shark Tooth (Eroded)
Carcharodon sp. or Otodus sp. fragment (likely)
Chert (Flint/Chalcedony)
Silicon Dioxide (SiO2)
Tumbled chalcedony or quartz pebble
Microcrystalline quartz (SiO₂), likely orange chalcedony/carnelian
Chert (Flint)
Silicon Dioxide (SiO2)
Graphite
Graphite (Carbon, C)
Quartz Sandstone Pebble
Sandstone (SiO2 dominated)
Red Sandstone
Arenite (Iron-rich)
Chalky limestone
Micritic calcite (CaCO₃), likely biogenic limestone/chalk
Chert (with Limestone matrix)
Silicon dioxide (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Chert (and/or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Breccia
Breccia
Chert / Jasper
Silicon Dioxide (SiO₂)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
Pyrite
Iron Sulfide (FeS2)
Chert (Green Chert or Jasper)
Microcrystalline Quartz (SiO2)
Chert (specifically Gray/Blue-Gray Chert)
Chert (SiO2)
Chert Arrowhead
Chert (Cryptocrystalline variety of Quartz, SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Brown Chert
Microcrystalline Quartz (SiO2)
Chert (Common Opal/Jasper variety)
Cryptocrystalline Quartz (SiO2)
Chert (and/or Flint)
Microcrystalline Quartz (SiO2)
Petoskey Stone
Hexagonaria percarinata (Fossilized Coral)
Chert (with nodule)
Microcrystalline Quartz (SiO2)
Sandstone (Quartzose)
Sandstone (SiO2 dominated)