Turritella Agate (Elimia Agate)
Silicified Elimia tenera (formerly misidentified as Turritella)
sedimentary (silicified fossiliferous chalcedony)
Category
Sedimentary (Silicified Fossiliferous Chalcedony)
Browse sedimentary (silicified fossiliferous chalcedony) specimens identified by the Rock Identifier community.
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Turritella Agate (Fossiliferous Chert)
Silicified Elimia tenera (Fossiliferous Chalcedony)
sedimentary
Turritella Agate
Silicified Elimia tenera Fossil (SiO2)
sedimentary
Chert or flint with chalcedony/quartz veins
Microcrystalline silica: primarily quartz (SiO₂), including chalcedony; possible fossiliferous limestone or silicified material
sedimentary
Turritella Agate
Elimia tenera silicified fossiliferous chalcedony
fossil
Fossiliferous Jasper / Miriam Stone / Elephant Skin Jasper
Biogenic Chalcedony / Silicified Fossiliferous Limestone
fossil
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Turritella (Gastropod Fossil)
Turritella (Genus of gastropods), CaCO3 (Calcium Carbonate or Silicified Agate)
sedimentary
Coquina Jasper
Fossiliferous Chalcedony (SiO2)
sedimentary
Chert (with Fossiliferous Silicification)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Fossilized Brachiopod
Phylum Brachiopoda (likely Order Spiriferida or Orthida)
fossil
Augite Shell / Turret Snail Fossil (or Recent Seashell)
Gastropoda (Class) / Turritellidae (Family)
fossil
Fossiliferous Limestone (Chertified Limestone)
Calcium Carbonate (CaCO3) often replaced by Microcrystalline Silica (SiO2)
sedimentary
Fossiliferous Sandstone (with Quartz patch)
Sedimentary Sandstone with Silicified Shell Fragments
sedimentary
Red Jasper with Fossils
Silicified Fossiliferous Jasper (Chert variant, SiO2)
sedimentary
Weathered chert or silicified limestone nodule
Microcrystalline quartz (SiO₂), possibly replacing limestone; exact identification requires testing
sedimentary
Oolitic Limestone / Fossiliferous Chert
Oolitic Limestone (CaCO3) / Silicified Limestone
sedimentary
Crinoid Stem Fossil in Matrix
Phylum Echinodermata, Class Crinoidea
fossil
Mookaite Jasper
Radiolarite (Silica, SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Fossiliferous Sandstone / Quartzite Pebble
Sedimentary rock with skeletal fragments (e.g., Paleozoic crinoid/brachiopod fossils)
fossil
Crinoid Stem Fossil
Crinoid columnal (Class Crinoidea)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Silicified Snail Fossil
Gastropod (likely replaced by Chalcedony/Quartz - SiO2)
fossil
Petrified Wood (Silicified Fossil)
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Zebra Jasper
Silicified sedimentary rock (SiO2) with mineral inclusions
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Chert or flint fragment
Microcrystalline quartz (SiO₂), likely silicified rock
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Ocean Jasper
Orbicular Quartz (SiO2)
Mineral
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood (Agatized/Silicified Wood)
Silicified Wood (SiO2)
sedimentary