Amber (Copal)
Fossilized Tree Resin (C10H16O)
mineral
Category
Mineral Like Biological Tissue
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Amber
Succinite (with empirical formula approximately C10H16O)
Organic Mineraloid
Fossiliferous Limestone (Gritstone/Marl)
CaCO3 (Calcium Carbonate) with Fossil Inclusions
sedimentary
Fossil shark teeth
Probably fossilized shark teeth, possibly *Otodus* or *Carcharhinus* species
fossil
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Chert (Banded)
Chert (Microcrystalline Silicon Dioxide, SiO2)
sedimentary
Fossiliferous Limestone (Pink/Red)
Calcium Carbonate (CaCO3) with Bioclasts
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Honeycomb Calcite
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Smurf Rock (Fictional Interpretation)
Cyanus Anthropomorphicus (Geologic Simulation)
Artificial/Fantasy Object
Unknown Organic Object (likely a berry or fruit)
Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.
Organic Material (likely a fruit or berry)
Knightia Fossil in Limestone
Knightia eocaena in micritic limestone
sedimentary
Amber
Succinite (approximate formula C10H16O)
mineraloid
Chert (Yellow Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Chert (with Quartz/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Chert (and Fossiliferous Limestone)
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Chert (Cherty Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Hag Stone
Perforated Flint or Chert (SiO2)
sedimentary
Banded Chert
Silicon Dioxide (SiO2)
sedimentary
Fossilized Shell Impression / Siltstone Fossil
Bivalvia / Brachiopoda mold in Siltstone
fossil
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Biogenic Fossils
sedimentary
Amber
Succinite (specific to Baltic amber), fossilized tree resin
Organic Mineraloid
Weathered fossiliferous limestone or fossil fragment
Indeterminate bioclastic carbonate rock; likely calcite (CaCO₃) with fossil shell material
fossil
Chert (Flint variety)
Chert (SiO2)
sedimentary
Limestone with Chert Nodule
Carbonate rock (CaCO3) with Microcrystalline Silicon Dioxide (SiO2) inclusion
sedimentary
Fossilized tooth or tooth fragment
Indeterminate vertebrate tooth; likely mammalian, mineralized hydroxyapatite
fossil
Fossilized Brachiopod
Articulata (Class) / Brachiopoda (Phylum)
sedimentary
Limestone (Flagstone)
Fossiliferous Limestone (CaCO3)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Brachiopod Fossil
Phylum Brachiopoda (order potentially Spiriferida)
fossil
Fossiliferous Limestone
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Fossil-bearing Sedimentary Rock
Sedimentum cum fossili
fossil
Otodus Shark Tooth
Otodus obliquus
fossil
Pearl
Aragonite (CaCO3) with Conchiolin
mineral
Fossiliferous limestone, possibly coral or stromatoporoid fossil
Calcitic limestone; predominantly CaCO₃, with fossilized colonial-organism structures
fossil
Pearl (likely Freshwater or Akoya Cultured)
Aragonite / Conchiolin composite (CaCO3)
Mineralloid (Organic gemstone)
Chert (Chalcedony-rich sedimentary rock)
Cryptocrystalline Quartz (SiO2)
sedimentary
Fossiliferous Chert (with Fossil Shells)
Silicon Dioxide (SiO2) with biogenic inclusions
sedimentary