Petrified Wood
Silicified Wood (Silicon Dioxide - SiO2)
Category
Browse organic material (likely a fruit or berry) specimens identified by the Rock Identifier community.
Petrified Wood
Silicified Wood (Silicon Dioxide - SiO2)
Petrified Wood
Silicified Wood (SiO2)
Dinosaur Claw Fossil
Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
Banded Chert
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
Amber
Succinite (approximate formula C10H16O)
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Chert (or Flint)
Chert (Sedimentary Cryptocrystalline Sio2)
Pyrite in Shale
Iron Disulfide (FeS2) in Sedimentary Shale
Banded Chert
Silicon Dioxide (SiO2)
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
Chert / Flint
Microcrystalline Quartz (SiO2)
Fossil Coral
Scleractinia or Anthozoa (Fossilized)
Petrified Wood
Silicified Wood (primarily SiO2)
Dinosaur Fossil Tooth
Vertebrate Fossilized Tooth
Chert (Polished/Tumbled)
Silicon Dioxide (SiO2)
Quartzite river stone
Quartzite (SiO2)
Sandstone Pebble
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 predominantly)
Petrified Wood
Silicified Wood (SiO2)
Sandstone
Arenite (primarily SiO2)
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
Chert Nodule (with Geode cavity)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Black Jasper
Silicon Dioxide (SiO2) with impurities
Jasper
Microcrystalline Quartz (SiO2)
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
Jasper
Microcrystalline Quartz (SiO2)
Fossilized Bone
Petrified Bone (Fluorapatite / Calcium Phosphate replacement)
Jasper
Microcrystalline Quartz (SiO2)
Yellow Jasper
Quartz (Silicon Dioxide, SiO2 with impurities)
Fossil Shark Tooth
Chondrichthyes (Class)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Chert / Chalcedony
Silicon Dioxide (SiO2)
Red Jasper
Quartz (Silicon Dioxide) with Hematite inclusions, SiO2
Chert (Nodule)
Silicon Dioxide (SiO2)
Chert (containing Flint and Calcareous inclusions)
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) impurities
Chert
Microcrystalline Quartz (SiO2)