Amber
Succinite (Formula: C10H16O)
Mineraloid
Category
Organic Specimen (Fossil)
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Concretion with Geode Cavity
Ferruginous Sandstone Concretion with Quartz Center
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Fluorite
Fluorite (CaF2)
mineral
Amber
Succinite (approximate formula C10H16O)
mineral
Crinoid Fossil in Limestone
Crinoidea (Phylum Echinodermata) in Calcite Matrix (CaCO3)
fossil
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide staining)
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz with Fe2O3 staining)
sedimentary
Sandstone (Ferruginous)
Arenite (with Iron Oxides)
sedimentary
Rugose Coral Fossil
Order Rugosa (Tetracorallia)
fossil
Sandstone
Arenite (primarily SiO2 with various cementing agents)
sedimentary
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Sandstone Concretion
Septarian Concretion (Nodule)
sedimentary
Sandstone
Arenite (Clastic Sedimentary Rock)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Jasper with Dendritic Inclusions
Silicon Dioxide (SiO2) with Manganese/Iron Oxide inclusions
sedimentary
Kambaba Jasper (Crocodile Jasper)
Stromatolite (Fossilized Algae within Microcrystalline Quartz), SiO2
sedimentary
Fossilized Shark Tooth
Carcharocles sp. or similar (Fossilized Fluorapatite)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Granite
Coarse-grained felsic intrusive rock, chiefly quartz, feldspar, and mica (biotite/muscovite)
igneous
Sandstone
Arenite (SiO2 based typically)
sedimentary
Crinoidean Fossil (Stem Fragment)
Phylum Echinodermata, Class Crinoidea
fossil
Amber
Succinite
Organic Mineraloid
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Painted)
Arenite (primarily SiO2)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) matrix with biogenic fragments
fossil
Sandstone
Arenite (SiO2 dominant)
sedimentary
Ironstone Concretion (Nutstone)
Ironstone (with High Limonite/Hematite Content)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Fossilized Oyster Shell
Ostrea / Exogyra (Phylum Mollusca)
fossil
Likely pale limestone or calcite-rich rock
Calcite-bearing limestone; chiefly calcium carbonate (CaCO₃)
sedimentary
Gastropod Fossil (Steinkern)
Class Gastropoda (internal mold)
fossil
Coral Fossil (Favosites type)
Phylum Cnidaria, Class Anthozoa (often CaCO3 - Calcium Carbonate)
sedimentary
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Petoskey Stone
Hexagonaria percarinata
fossil
Sandstone (Ferruginous)
Arenite (SiO2 with iron oxide impurities)
sedimentary
Sandstone with Iron Staining
Arenite (SiO2 based with Fe2O3 staining)
sedimentary