Yellow Agate (Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Category
Sedimentary (Silicified Fossiliferous Chalcedony)
Browse sedimentary (silicified fossiliferous chalcedony) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Silicified Fossiliferous Chalcedony) in the encyclopedia
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Petrified Tabulate Coral
Favosites (Honeycomb Coral)
fossil
Jasper and Quartz Breccia
Silicified Breccia / Microcrystalline Quartz with Iron Oxide
sedimentary
Wonderstone (Sandstone)
Silicified Quartz Sandstone with Iron Oxide staining
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2 - Silicon Dioxide)
sedimentary
Blue Chalcedony Cube
Silicon Dioxide (SiO2)
mineral
Carnelian
Chalcedony (SiO2)
mineral
Red Agate
Chalcedony (SiO2)
gemstone
Jasper
Chalcedony (SiO2)
mineral
Chalcedony Pebble with Jasper/Iron Oxide Cortex
Silicon Dioxide (SiO2)
mineral
Tumbled jasper or chalcedony pebble
Microcrystalline quartz, SiO₂ (likely jasper/chalcedony)
mineral
Fossil Shark Tooth Fragment
Elasmobranchii dentition (fragment)
fossil
Chalcedony (Botryoidal or Chalcedony Rose)
Silicon dioxide (SiO2)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Fossilized Echinoid Fragment (Calycinal/Boss Fossil)
Echinodermata fossil fragment
fossil
Carnelian
Chalcedony (SiO2)
mineral
Shale
Shale (fine-grained clastic sedimentary rock)
Sedimentary
White Agate (Chalcedony)
Chalcedony (SiO2)
mineral
Banded Sedimentary Rock (Wishbone Stone / Banded Quartzite or Limestone)
Silicified limestone or banded sedimentary rock with mineral veins
sedimentary
Agate
Chalcedony (SiO2)
sedimentary
Agate
Chalcedony (SiO2)
sedimentary
Fancy Jasper
Chalcedony (SiO2)
sedimentary
Yellow Jasper
Chalcedony (SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz pseudomorph after wood)
fossil
Agate
SiO2 (Chalcedony/Quartz)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Bone Pebble
Silicified Fossilized Bone
fossil
Petrified Wood
Silicified Wood (SiO2)
mineral
Tuff with Quartz and Calcite Veining
Lithic Tuff (Silicified)
igneous
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
Mineral / Fossil
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Crinoid Fossil Fragment
Crinoidea (echinoderm fossil embedded in limestone/matrix)
fossil
Chalcedony Geode / Agate Nodule
Cryptocrystalline Quartz (SiO2)
mineral
Fossil Shark Tooth (Otodus obliquus)
Otodus obliquus; hydroxyapatite (mineralized form Ca5(PO4)3(OH))
sedimentary (fossiliferous)
Rugose Coral Fossil
Order Rugosa (Tetracorallia)
fossil
Calligraphy Stone
Mariam Jasper (Fossiliferous Limestone composed of Hematite and Shell remains)
sedimentary
Jasper
Chalcedony (SiO2)
Sedimentary/Mineral