Igneous And Fossil

Small yellow-orange mineral fragment, likely amber or iron-stained quartz

Possibly amber (fossilized resin; organic mineraloid) or quartz (SiO₂)

Tumbled granite or granitic gneiss

Granite/granitic gneiss, chiefly quartz, feldspar, and dark mica or amphibole

Polished pink granite pebble

Granite; primarily quartz, potassium feldspar, plagioclase, and minor biotite/hornblende

Vesicular basalt (scoriaceous volcanic rock)

Basalt, predominantly plagioclase + clinopyroxene ± olivine, with abundant vesicles

Vesicular basalt (scoria-like volcanic rock)

Basalt, predominantly plagioclase + pyroxene ± olivine; vesicular variety

Belemnite Fossil

Belemnitida (rostrum)

Fossil fish specimen

Fossilized fish vertebrate, likely an articulated fish impression; exact taxon indeterminate

Weathered limestone

Calcite-rich limestone (CaCO₃), possibly fossiliferous

Weathered granitic rock (likely granite or granodiorite)

Granite–granodiorite; mainly quartz, feldspar, and dark mica/amphibole

Coarse-grained granite or granitic gneiss

Granite; chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende. The pronounced streaking may indicate gneissic deformation.

Fossil Coral

Phylum Cnidaria / Rugosa or Tabulata

Fossiliferous limestone pebble

Calcitic limestone, primarily CaCO₃ (calcite), containing a possible trace-fossil or shell fragment

Petrified Wood

Silicified Wood (SiO2 - Quartz/Chalcedony replacement)

Fossiliferous limestone, likely stromatolitic or bioclastic limestone

Calcite-rich carbonate rock; predominantly CaCO₃ (calcite), with possible siliciclastic impurities and fossil structures

Fossilized Echinoid Fragment (Calycinal/Boss Fossil)

Echinodermata fossil fragment

Weathered vesicular basalt (likely amygdaloidal basalt)

Basalt, chiefly plagioclase and pyroxene with possible olivine; cavities may contain secondary zeolites, calcite, or silica

Fossilized Shark Tooth

Elasmobranchii (Class) fossil

Fossil Shell

Invertebrate fossil (Mollusca)

Fossil Coral / Crinoid Stem section

Anthozoa / Crinoidea fossil

Fossilized Bone (Petrified Bone)

Permineralized Bone Fossil

Fossilized Shark Tooth

Lamniformes (order) fossil

Fossilized Echinoid (Sea Urchin) or Brachiopod

Echinoidea / Invertebrate Fossil

Fossilized Gastropod Shell

Class Gastropoda (Fossil)

Fossilized Bone Chunk (likely Dinosaur or Large Mammal)

Permineralized Fossil Bone

Fossilized Bivalve Shell

Bivalvia (fossil specimen)

Petrified Coral (Agatized Coral)

Anthozoa (Agatized Fossil)

Biotite granite (weathered granitic rock)

Granite; predominantly quartz (SiO₂), feldspar, and biotite mica

Fossilized Horn Coral

Rugosa (Rugose coral)

Fossil Coral (Tabulate Coral Fragment)

Anthopleura / Tabulata (CaCO3 - Calcium Carbonate)

Crinoid Stem Fossil

Crinoid columnal (Echinodermata)

Vesicular basalt (possibly amygdaloidal basalt)

Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar, pyroxene, and commonly olivine; cavities may contain secondary zeolites, calcite, or quartz.

Weathered biotite granite or granitic gneiss

Felsic granitoid, chiefly quartz, K-feldspar, plagioclase, and biotite; possible gneissic deformation

Agatized Fossil Coral

Agatized Anthozoa

Fossil Shark Tooth

Otodus sp. (likely Otodus obliquus) fossil

Fossil Shark Tooth

Chondrichthyes (class)

Shark Tooth Fossil

Carcharocles megalodon or similar fossilized shark tooth

Mosasaur Tooth Fossil

Mosasaurus sp.

Fossilized Bone Fragment

Petrified Osseous Material

Bivalve Internal Mold Fossil

Steinkern (Bivalvia mold)

Rugose Coral (Horn Coral) Fossil

Order Rugosa (likely Grewingkia or Zaphrentis genus)

Mammoth or Mastodon Tooth Fossil

Proboscidea tooth (Mammuthus or Mammut)

Fossilized echinoid (sea urchin), likely a flint/chalk-associated test

Echinoid fossil; likely a regular echinoid such as Echinocidaris or related taxon, composed mainly of recrystallized calcite (CaCO₃)