Sedimentary Or Metamorphic (Base Substrate)

Fossilized Shark Tooth

Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)

Sandstone (likely Arkosic)

Arenite (SiO2 based)

Fossilized Shark Tooth

Bioapatite (Calcium Hydroxyapatite) replacement

Bloodstone

Chalcedony (Variety: Bloodstone / Heliotrope), SiO2

Painted Sandstone Cobble

Clastic Sedimentary Rock (Sandstone base)

Limestone Pebble

Sedimentary Calcium Carbonate (CaCO3)

Hag Stone (Holed Quartzite Pebble)

Quartzite (SiO2 based) with natural vug or erosion hole

Quartz Geode

Silicon Dioxide (SiO2) within a geode

Biotite Schist

Biotite-rich Schist [K(Mg,Fe)3AlSi3O10(F,OH)2]

Quartzite (Iron-stained River Rock)

Metamorphic Rock consisting primarily of Quartz (SiO2)

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3

Milky Quartz

Silicon Dioxide (SiO2)

Conglomerate

Sedimentary Conglomerate

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (SiO2 based)

Sandstone (with Possible Iron Staining/Crust)

Arenite (SiO2 based)

Sandstone (Quartz-rich)

Arenite (SiO2 based)

Sandstone (Pebble)

Arenite (SiO2 based)

Sandstone (Sedimentary Rock)

Arenite (SiO2 based)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Rose Quartz

Quartz (Silicon Dioxide, SiO2)

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Puddingstone (specifically Gowganda Tillite or St. Joseph Island Puddingstone)

Jasper Conglomerate

Fossil Shark Tooth

Carcharodon sp. (likely Otodus or similar Lamniformes order)

Hematite

Hematite (Fe2O3)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Druzy Quartz on Limestone

Silicon Dioxide (SiO2)

Leopardite

Quartz porphyry / Quartz monzonite with manganese oxide spots

Limestone with Chert

Calcium Carbonate (CaCO3) with Silica (SiO2) inclusions

Sandstone-based Concrete Fragment

Cementitious Composite with Sedimentary Aggregate

Mixed Gravel and Pebbles

Polylithic Alluvial Aggregate

Sandstone (Ferruginous)

Sandstone (clastic sedimentary rock, mainly SiO2 with iron oxide cement)

Tumbled yellow jasper or chert

Microcrystalline quartz (SiO₂), likely iron-oxide-stained chalcedony/chert

Sandstone

Arenite (SiO2 based)

Milky quartz with iron-oxide staining

Quartz, silicon dioxide (SiO₂)

Hag Stone

Perforated Sedimentary Rock

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Slate

Slate (Foliated Metamorphic Rock)

Mica Schist

Foliated Metamorphic Rock (Schist)

Conglomerate

Conglomerate (Clastic Sedimentary Rock)

Sandstone

Clastic sedimentary rock (Arenite)

Fossiliferous Limestone

Biogenic Sedimentary Rock (CaCO3)