Igneous And Fossil

Fossilized Shark Tooth

Chondrichthyes (class)

Fossilized Shark Tooth

Chondrichthyes (Class)

Fossilized Brachiopod

Phylum Brachiopoda (replaced by Calcite/CaCO3)

Fossilized Crab Carapace (Concretion)

Decapoda (fossil), typically preserved in calcite or siderite concretion

Fossilized Brachiopod

Phylum Brachiopoda (Calcium Carbonate/Silica replacement)

Fossilized Shark Tooth

Carcharocles sp. (likely Lemon or Sand Tiger)

Pyrite

Iron Sulfide (FeS2)

Silicified fossil-bearing chert

Microcrystalline quartz (SiO₂), likely chalcedony replacing carbonate shell material

Weathered quartz-rich river pebble

Likely altered granite or granitic gneiss, composed mainly of quartz, feldspar, and minor mica/iron oxides

Pink granite (weathered granitic rock)

Granite; chiefly quartz, alkali feldspar, plagioclase, and biotite/hornblende

Granite

Phaneritic Plutonic Felsic Rock (SiO2 > 69%)

Fossiliferous limestone

Calcite-rich limestone (CaCO₃), possibly coral or shell-bearing

Fossilized bivalve shell

Bivalvia indeterminate; likely a fossil clam or cockle

Weathered granitic rock

Likely biotite granite or granodiorite (quartz–feldspar–mica aggregate)

Vesicular basalt (scoria-like volcanic rock)

Basalt; primarily plagioclase feldspar, pyroxene, and olivine (variable)

Polished orbicular granite (likely leopard-skin granite)

Orbicular granite; quartz + feldspar + biotite/amphibole, with mafic orbicules

Weathered volcanic rock, likely andesite or basalt

Fine-grained mafic to intermediate volcanic rock; probable andesite–basalt, compositionally dominated by plagioclase with pyroxene and possibly alteration minerals

Ammonite Fossil

Ammonoidea

Rugose Coral Fossil

Order Rugosa

Fossil Belemnite Guard

Belemnitella spp. (rostrum)

Brachiopod Fossil

Phylum Brachiopoda (likely Order Rhynchonellida or Spiriferida)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Weathered vesicular basalt (likely amygdaloidal basalt)

Basalt, composed mainly of plagioclase feldspar, pyroxene, and altered olivine; cavities may contain secondary zeolite, calcite, or silica

Quartz-rich granite or granitic pegmatite fragment

Granite, chiefly quartz (SiO₂), feldspar, and minor mica/iron oxides

Weathered porphyritic granite with lichen

Granite; predominantly quartz, feldspar, and mica (approximate composition)

Weathered granitic pebble

Likely biotite-bearing granite or granodiorite, dominated by quartz and feldspar

Orbicular granite (likely larvikite or related granitic rock)

Granite composed mainly of quartz, feldspar, and dark mafic minerals; exact variety is uncertain from the image

Polished fossiliferous limestone, possibly ammonite-bearing

Calcite-rich limestone (CaCO₃), with visible fossil or shell fragments

Crinoid Stem Fossil

Class Crinoidea (Echinodermata)

Sand Tiger Shark Tooth

Carcharias taurus (fossilized)

Fossilized Shark Tooth or Bone Fragment

Vertebrate Fossil (likely Carcharodon or similar genus)

Fossilized Rugose Coral in Limestone

Order Rugosa in Sedimentary Matrix (CaCO3)

Fossilized Favosites Coral (Honeycomb Coral)

Favosites (extinct genus Table Coral)

Fossil Shark Tooth

Odontaspididae (Sand Tiger Shark family)

Petrified Wood

Agatized or Silicified Wood (SiO2)

Fossil Shark Teeth (likely Sand Tiger Shark)

Carcharias taurus (fossilized dentition)

Rugose Coral Fossil (Horn Coral)

Order Rugosa

Fossilized Shark Tooth

Chondrichthyes (Class)

Fossilized Blastoid (Sea Bud)

Pentremites sp. (Echinodermata, Blastoidea)

Fossilized Brachiopod

Brachiopoda (e.g., Atrypa or Rhynchonellida)

Fossilized Trilobite or Mollusk Fragment

Phylum Arthropoda / Mollusca fossil in sedimentary matrix

Shark Tooth Fossil

Vertebrate fossilized tooth (Chondrichthyes)