Fossil

Amber

Fossilized tree resin (not a true mineral as it is organic and amorphous); Chemical formula is highly variable, but often approximated as C10H16O.

Coquina

Bioclastic Limestone (composed primarily of Calcium Carbonate / CaCO3)

Amber

Fossilized Tree Resin (Amorphous Hydrocarbon)

Coquina

Biogenic Limestone (Calcite / CaCO3)

Petoskey Stone

Hexagonaria percarinata (Fossilized Rugose Coral)

Dinosaur Bone (Fossilized)

Permineralized Bone (CaCO3 or SiO2 after Hydroxylapatite)

Limestone (Micrite/Chalky variety)

Calcium Carbonate (CaCO3)

Slate

Slate (a fine-grained, foliated metamorphic rock). Mineral composition: Primarily composed of mica minerals (muscovite, chlorite, sericite) and quartz, with minor amounts of hematite, pyrite, and other accessory minerals.

Fossiliferous Sedimentary Rock (Coquina/Limestone)

Fossiliferous Calcarenite / Bioclastic Limestone

Fossilized Honeycomb Coral

Favosites (extinct genus of tabulate corals)

Dendritic Agate (or Dendritic Opal)

SiO2 (for Agate), SiO2·nH2O (for Opal)

Bumblebee Jasper

Fossiliferous Calcite containing Orpiment and Realgar

Fossilized Rugose Coral (Horn Coral)

Order Rugosa (extinct tetra-coral)

Amber (Copal)

Organic gemstone, fossilized tree resin (often immature amber or copal)

Sandstone

Sandstone (various mineral compositions)

Coquina Limestone (Fossiliferous Limestone)

Calcareous bioclastic sedimentary rock (CaCO3)

Fossiliferous Limestone (Coquina)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossilized Solitary Rugose Coral

Order Rugosa (commonly Horn Coral)

Fossilized Favosites (Honeycomb Coral)

Favosites (Genus), Phylum Cnidaria, Class Anthozoa

Mookaite Jasper

Siliceous sedimentary rock (variety of Jasper/Chert)

Mookaite Jasper

Siliceous (chert) sedimentary rock, a form of Jasper

Fossilized Brachiopod Shell in Matrix

Phylum Brachiopoda (typically Calcium Carbonate or Chitinophosphatic)

Fossilized Shark Tooth (Otodus obliquus)

Otodus obliquus (composed primarily of Fluorapatite)

Coquina or Fossilized Shell Aggregate

Calcareous bioclastic sedimentary rock (CaCO3)

Fossilized Wood (with Coal and Limonite)

Petrified Wood (Silicified or Carbonized Flora)

Fossiliferous Limestone (containing Brachiopods)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone with Brachiopod

Phylum Brachiopoda in calcitic matrix

Bumblebee Jasper

Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)

Chert (or Flint)

SiO2 (predominantly microcrystalline quartz)