Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Category
Sedimentary (Silicified Fossiliferous Chalcedony)
Browse sedimentary (silicified fossiliferous chalcedony) specimens identified by the Rock Identifier community.
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Fossiliferous Limestone with Brachiopod
Limestone (Calcium Carbonate, CaCO3) with Phylum Brachiopoda fossil
sedimentary
Coquina / Fossiliferous Limestone
Calcareous bioclastic sedimentary rock (CaCO3)
sedimentary
Fossiliferous Brachiopod in Shale
Brachiopoda (Phylum) preserved in Carbonaceous Shale
sedimentary
Agate
SiO2
mineral
Fossiliferous Limestone with Brachiopod
Phylum Brachiopoda in Sedimentary Matrix (CaCO3)
fossil
Coral Fossil
Anthozoa (order Scleractinia)
fossil
Fossilized Tabulate Coral (Honeycomb Coral)
Favosites sp. (Order: Tabulata)
fossil
Crinoid Fossil in Limestone
Crinoid (Class Crinoidea) in Fossiliferous Limestone (CaCO3)
sedimentary
Weathered sandstone
Quartz-rich clastic sandstone, likely iron-oxide-stained
sedimentary
Chalk
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (primarily SiO2 with trace Fe2O3)
sedimentary
Grey Limestone Pebble
Limestone (Calcium Carbonate - CaCO3)
sedimentary
Limestone
Sedimentary rock composed primarily of Calcium Carbonate (CaCO3)
sedimentary
Coquina
Biogenic Limestone (Calcite / CaCO3)
sedimentary
Mookaite Jasper
Radiolarite (Silicified radiolarian chert), SiO2
sedimentary
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Mookaite (Mookaite Jasper)
Silicified Radiolarite (SiO2 with iron oxides)
sedimentary
Petrified Wood
Silicified Wood (primarily Quartz/SiO2)
mineral
Fossilized Coral (Petoskey Stone or similar Hexagonaria variant)
Hexagonaria percarinata (Fossilized Coral)
sedimentary
Glauconitic Sandstone
Glauconitic Sandstone (complex silicate formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Fossilized Rugose Coral (Horn Coral)
Order Rugosa
sedimentary
Fossilized Coral (Petoskey-like or Favosites)
Anthozoa (Fossilized Coral)
sedimentary
Favosites (Honeycomb Coral Fossil)
Favosites (Genus of extinct tabulate coral)
sedimentary
Fossiliferous Rock (Invertebrate Fossil in Matrix)
Fossiliferous limestone or shaly matrix containing skeletal fossil remains
fossil
Fossilized Gastropod Shell
Gastropoda (Class) replacement / internal cast (steinkern)
fossil
Fossil Coral
Tabulate Coral (potentially Favosites or Calapoecia)
fossil
Fossilized Honeycomb Coral
Favosites (extinct genus of tabulate corals)
sedimentary
Fossilized Favosites (Honeycomb Coral)
Favosites (Genus), Phylum Cnidaria, Class Anthozoa
sedimentary
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Fossiliferous Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Limestone (River Pebble / Fossiliferous Limestone)
Calcium Carbonate (CaCO3)
sedimentary
Calligraphy Stone
Mariam Jasper (Fossiliferous Limestone with Hematite and Iron)
sedimentary
Crinoid and Coral Fossils in Limestone
Fossiliferous Limestone with Rugosa (order) and Crinoidea (class)
sedimentary
Fossilized Knightia Fish
Knightia eocaena (set in fossiliferous Micritic Limestone)
sedimentary
Mookaite Jasper
Silicon Dioxide (SiO2) - variety of Chert/Jasper
sedimentary
Ocean Jasper
Orbicular Jasper (Silicon Dioxide SiO2)
sedimentary
Chalcedony (Agate/Carnelian)
Cryptocrystalline Silicon Dioxide (SiO2)
mineral
Chalcedony (Quartz Var.)
Silicon Dioxide (SiO2)
mineral
Green Jasper / Chalcedony
Silicon Dioxide (SiO2)
sedimentary
White Chalcedony (likely Common Opal or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Fossiliferous Limestone (Crinoidal Limestone)
Calcium Carbonate with Crinoid Stem Fossils (CaCO3)
sedimentary