Petrified Wood
Silicified Wood (SiO2)
sedimentary
Category
Sedimentary (Silicified Fossiliferous Chalcedony)
Browse sedimentary (silicified fossiliferous chalcedony) specimens identified by the Rock Identifier community.
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Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Marine invertebrate fossils (Brachiopods and Gastropods)
Phylum Brachiopoda and Class Gastropoda
fossil
Petrified wood
Silicified wood (commonly quartz/chalcedony replacing wood)
fossil
Polished ocean jasper or orbicular rhyolite
Silicified, spherulitic rhyolite; chiefly quartz, feldspar, and chalcedony
igneous
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
metamorphic
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossil Bivalve Shell
Class Bivalvia (e.g., Veneriidae family)
sedimentary
Petrified Wood Fragment
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Fossiliferous limestone
Bioclastic limestone, composed mainly of calcite (CaCO₃)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Biogenic Fragments
sedimentary
Fossiliferous Limestone
Calcite-rich Fossiliferous Limestone (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Fossiliferous limestone
Bioclastic carbonate rock, chiefly calcite (CaCO₃), containing a likely colonial coral or bryozoan fossil
fossil
Red jasper pebble
Microcrystalline quartz (SiO₂), colored by iron oxides; possibly brecciated jasper
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Fossiliferous limestone
Bioclastic carbonate rock, predominantly calcite (CaCO₃)
sedimentary
Wood Jasper
Siliceous sedimentary rock (variety of Chert/Chalcedony)
Sedimentary
Fossiliferous Limestone
Carbonate sedimentary rock (CaCO3) with bioclasts
sedimentary
Fossiliferous Limestone
Calcium Carbonate - CaCO3
sedimentary
Weathered quartz-rich mineral nodule
Likely quartz (SiO₂) with iron-oxide staining and possibly feldspar/mica; exact identification requires testing
mineral
Polished agate or chalcedony slice (uncertain)
Microcrystalline quartz, SiO₂; possibly fossil-bearing chalcedony
mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Fossilized Wood (Petrified Wood)
Silicified Wood (primarily quartz/chalcedony replacing organic matter)
Sedimentary (with some aspects of mineral replacement)
Turritella Agate / Fossiliferous Limestone
Elimia tenera (commonly mislabeled as Turritella in chalcedony/calcite matrix)
fossil
Tabulate Coral Fossil (Favosites)
Favosites (Commonly known as Honeycomb Coral)
sedimentary
Fossiliferous limestone
Bioclastic limestone, primarily calcite (CaCO₃)
sedimentary
Brain Coral Fossil
Family Mussidae or Merulinidae (Order Scleractinia)
sedimentary
Fossiliferous Limestone
Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Limestone with Fossil Imprints
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Fossiliferous limestone
Bioclastic limestone, predominantly calcite (CaCO₃)
sedimentary
Fossiliferous limestone
Bioclastic limestone, likely containing brachiopod or bivalve impressions
fossil