Petrified Wood
Silicified wood (primarily quartz replacing organic cellulose)
fossil
Category
Sedimentary (Silicified Fossiliferous Chalcedony)
Browse sedimentary (silicified fossiliferous chalcedony) specimens identified by the Rock Identifier community.
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Fossiliferous Limestone
Biogenic Sedimentary Rock
sedimentary
Fossil Coral
Scleractinia / Rugosa (Silicified Coral)
fossil
Fossil Coral / Fossilized Coral
Scleractinia (Anthodiscus / Favia / Montastraea fossil)
fossil
Chrysocolla (with Quartz and Malachite)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
mineral
Fossil Shell Fragment (possibly Brachiopod or Bivalve)
Calcium Carbonate (CaCO3) - Phylum Brachiopoda or Mollusca
sedimentary
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony replacing $SiO_2$)
sedimentary
Petrified Wood
Silicified Wood (Permineralized organic matter, głównie $SiO_2$)
fossil
Silicified Gastropod Fossil (Agatized Fossil)
Gastropoda (Class) preserved in Chalcedony/Quartz (SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of organic matter)
fossil
Limestone with Fossil
Sedimentary limestone, calcium carbonate (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2 permineralization)
fossil
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement)
fossil
Pale blue-gray quartz-rich pebble (tentative)
Quartz, SiO₂, possibly chalcedony or a weathered metamorphic fragment
mineral
Petrified Wood with Lichen
Silicified Wood (SiO2) colonized by crustose lichens
fossil
Chrysocolla
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Shark Tooth Fossil
Carcharocles megalodon or similar extinct shark tooth
fossil
Petrified Wood
Silicified Wood (Permineralized organic tissue)
fossil
Chrysocolla in Quartz (Gem Silica)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / SiO2 (Quartz)
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Coprolite
Fossilized feces (various taxa)
sedimentary
Shale / Mudstone
Laminated Mudrock (Siliciclastic Sedimentary Rock)
sedimentary
Petrified Wood
Silicified wood (Quartz replacement, SiO2)
fossil
Limestone
Limestone (CaCO3)
sedimentary
Fossiliferous Shale
Fossiliferous Mudstone / Shale
sedimentary
Petrified Wood
Silicified Wood
fossil
Turritella Agate / Fossiliferous Limestone
Elimia tenera in Chalcedony/Calcite Matrix
fossil
Petrified Wood
Silicified wood (Quartz replacement)
fossil
Fossiliferous Concretion
Septarian Concretion containing Brachiopods/Crinoids
fossil
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate with Fossils)
sedimentary
Coquina / Fossiliferous Limestone
Fossiliferous Limestone / CaCO3
sedimentary
Petrified Wood
Silicified wood (Quartz / Chalcedony replacement)
fossil
Shale
Laminated Mudstone
sedimentary
Petrified Wood
Silicified Wood (SiO2 - Quartz/Chalcendony replacing organic matter)
sedimentary
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
sedimentary
Sandstone Concretion with Fossil Wood
Ferruginous Sandstone Concretion (SiO2 with Fe2O3 cement)
sedimentary
Agatized fossil fragment, possibly silicified coral
Chalcedony (microcrystalline SiO₂) replacing carbonate fossil material
fossil
Fossiliferous Kalkstein (Marl/Sandstone)
Fossiliferous calcarenite/siltstone
sedimentary
Fossil Bone Fragment
Petrified bone (permineralized hydroxyapatite)
fossil
Limestone with Fossil inclusions
Fossiliferous Limestone (CaCO3)
sedimentary