Sandstone (Quartzose)
Arenite (Siliciclastic sedimentary rock)
sedimentary
Category
Organic Specimen (Fossil)
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Coquina or Fossiliferous Limestone
Fossiliferous Limstone (CaCO3)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (SiO2 principal component)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Coral Fossil
Scleractinia (Fossilized Coral)
fossil
Seashell Fossil
Mollusca (Bivalvia)
fossil
Brachiopod Fossil
Phylum Brachiopoda (likely Order Rhynchonellida or Spiriferida)
fossil
Calcite-rich limestone fragment
Limestone, predominantly calcite (CaCO₃), possibly micritic or fossiliferous
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (specifically Arkose or Ferruginous Sandstone)
Sandstone (SiO2 predominant)
sedimentary
Sandstone (Greywacke/Siltstone variant)
Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)
sedimentary
Ammonite Fossil
Ammonoidea (subclass)
sedimentary
Siltstone with iron staining
Siltstone (primarily SiO2 with FeO(OH) coatings)
sedimentary
Fossil Coral
Cnidaria fossil (often Calcium Carbonate / CaCO3)
sedimentary
Bivalve Fossil
Bivalvia (Phylum Mollusca)
Fossil
Shale
Shale (clay-rich mudstone)
sedimentary
Sandstone (specifically Arkose or Ferruginous Sandstone)
Sandstone (SiO2 with iron oxide inclusions)
sedimentary
Gastropod Fossil
Phylum Mollusca, Class Gastropoda
fossil
Chert (Hagstone/Adder Stone)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Petoskey Stone
Hexagonaria percarinata
fossil
Coal (most likely Bituminous or Anthracite)
Bituminous Coal (Grade of Coal), Anthracite (Grade of Coal)
Sedimentary Rock
Petrified Wood
Silicified Wood (primarily SiO2 - Silicon Dioxide / Chalcedony)
metamorphic
Chert / Fossiliferous Limestone
Sedimentary Chert (often containing CaCO3 or SiO2 replacements)
sedimentary
Shale with Quartz Veins
Fissile Sedimentary Rock (SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite
sedimentary
Fossilized Coral (Petoskey Stone / Hexagonaria)
Hexagonaria percarinata / Rugosa coral
fossil
Ammonite Fossil
Ammonoidea (primarily composed of Calcite, CaCO3)
sedimentary
Ammonite Fossil
Ammonitida (Extinct subclass of Cephalopoda)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Chert (potentially Fossiliferous or Jasperoid)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (River Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Common Pebble / Sedimentary Rock Fragment
Lithified clastic sediment
sedimentary
Sandstone (Greywacke/Siltstone variant)
Arenite / Wacke (SiO2 with diverse mineral inclusions)
sedimentary
Fossil Coral
Anthozoa fossil (Calcite / SiO2 replacement)
fossil
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2 with mineral cement)
sedimentary
Sandstone Pebbles
Arenite (Sedimentary rock composed of sand-sized grains)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone Concretion
Sedimentary Concretion (SiO2 or CaCO3 cemented)
sedimentary
Fossiliferous Limestone with Crinoid Stem fragment
Calcite (CaCO3) containing Crinoidea fossils
sedimentary