Petrified Wood
Silicified wood (primarily Silicon Dioxide - SiO2)
mineral (silicate-replaced organic material)
Category
Mineral (Silicate Replaced Organic Material)
Browse mineral (silicate replaced organic material) specimens identified by the Rock Identifier community.
Learn about Mineral (Silicate Replaced Organic Material) in the encyclopedia
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Bamboo Leaf Jasper
Silicified Siltstone or Jasper (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, SiO2)
sedimentary
Fossilized Coprolite
Coprolite (fossilized feces)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Green Jasper
Jasper (Silicates, SiO2)
sedimentary
Ferruginous Sandstone (with possible trace fossils)
Arenite with Iron-Oxide Cement (SiO2 with Fe2O3)
sedimentary
Coprolite
Fossilized Feces
sedimentary
Yellow Jasper (Chert)
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Fossil Shark Tooth
Otodus sp. or Carcharocles sp. (likely fossilized Chondrichthyes)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Potassium-Rich Silicate Clay (inferred from biological context)
Phyllosilicate group (likely Illite or Smectite within surrounding soil substrate)
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Petrified Wood
Silicified wood (primarily SiO2 - Silicon Dioxide/Quartz)
metamorphic
Agatized Fossil (Druzy Agate)
Silicon Dioxide (SiO2) replacing organic matter
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, formula SiO2)
mineral
Fossilized Shark Tooth
Carcharhinus sp. (likely Bull or Requiem shark family)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Fossilized Shark Tooth (Otodus)
Otodus obliquus
fossil
Chert / Jasper / Agate (Chalcedony Group)
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Chert (Flint)
Silicon dioxide (SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony - SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Fossil Shark Tooth
Chondrichthyes (class); likely Lamniformes (order) fossilized in Apatite/Hydroxyapatite
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Chalcedony (Agatized Coral / Rough Chalcedony Node)
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
mineral
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, SiO2)
mineral
Fossil Shark Tooth
Carcharodon sp. (likely Otodus or similar Lamniformes order)
sedimentary
Chert
Silicon dioxide (SiO2)
Sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Chert Concretion (Flint)
Silicon Dioxide (SiO2)
sedimentary
Nephrite Jade
Nephrite
Mineral/Rock
Petrified Dinosaur Bone (Gembone)
Agatized Dinosaur Bone
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2 as Quartz/Chert/Chalcedony)
sedimentary