Sedimentary Or Igneous Fragment

Pumice or Tuff

Pumice / Tuff

Brick fragment (Man-made material)

N/A (Fired clay)

Fossilized Shark Tooth (Fragment)

Elasmobranchii gen. et sp. indet.

Fossiliferous Limestone

Biogenic Limestone (CaCO3)

Sedimentary Breccia

Clastic Breccia (CaCO3/SiO2 matrix)

Quartz-rich sandstone or quartzite fragment

Likely quartz arenite; possibly weakly metamorphosed quartzite (mostly SiO₂)

Quartz Druzy (Geode Fragment)

Silicon Dioxide (SiO2)

Banded iron formation fragment (likely hematite–magnetite ironstone)

Banded iron formation; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and microcrystalline quartz (SiO₂)

Sea Glass (Frosted Glass Fragment)

Amorphous Silica (Anthropogenic Sediment)

Jasper in Calcite / Brecciated Jasper

Silicon dioxide with calcium carbonate (SiO2 with CaCO3)

Sandstone (Red)

Arenite (primarily Quartz, SiO2, with Iron Oxide cement)

Coquina

Coquina (Bioclastic Limestone)

Fossiliferous Limestone (Coquina-like)

Biogenic Limestone

Sandstone (likely Fossiliferous)

Arenite / Sedimentum arenaceum

Fossiliferous Limestone

Fossiliferous Calclutite / Bio-calcarenite (CaCO3)

Coquina

Biogenic Limestone (Calcium Carbonate, CaCO3)

Fossiliferous Limestone (Coquina / Shell Limestone)

Bioclastic Limestone (CaCO3)

Likely weathered quartz-rich stone or fossil fragment

Indeterminate; possibly quartz-bearing sandstone, iron-stained quartz, or a fragmentary fossil

Breccia

Breccia

Quartz

Silicon Dioxide (SiO₂)

Druzy Quartz Geode Fragment

Silicon Dioxide (SiO2)

Fossiliferous Limestone

Fossiliferous Limestone (CaCO3 with organic inclusions)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Coquina / Fossiliferous Limestone

Coquina (composed primarily of Calcium Carbonate / CaCO3)

Pyrite

Iron Disulfide (FeS2)

Breccia

Breccia (Clastic Sedimentary Rock)

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Breccia

Breccia - Clastic sedimentary rock

Coquina

Coquina (a type of limestone)

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Breccia

Breccia (Clastic sedimentary rock)

Fossiliferous Limestone

Biogenic Limestone containing marine invertebrate fossils

Coprolite

Coprolite (fossilized feces)

Conglomerate

Conglomerate (SiO2, Al2O3, Fe2O3, CaCo3)

Fossiliferous Limestone

Limestone (Calcium Carbonate, CaCO3)

Pink calcite (likely)

Calcite — calcium carbonate, CaCO₃

Pyrite (iron pyrite)

Iron sulfide, FeS₂; commonly called fool’s gold

Milky Quartz / Quartz Geode Fragment

Silicon Dioxide (SiO2)

Terracotta (Man-made ceramic brick fragment)

Baked clay / High-iron ceramic (Silicate-based ceramic)

Conglomerate

Conglomerate (Detrital sedimentary rock)

Quartz Geode

Silicon Dioxide (SiO2) within a sedimentary or igneous host

Brown Sandstone (River Rock)

Arenite