Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Category
Sedimentary (Fossil)
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Crushed Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (lithic or quartz sandstone)
sedimentary
Chert (specifically a flint nodule component)
Microcrystalline quartz (SiO2)
sedimentary
Iridescent Ammonite Fossil
Ammonoidea (subclass); Composition: Aragonite (Calcium Carbonate, CaCO3) often replaced by Calcite or Pyrite
sedimentary
Crinoid Fossil Limestone
Crinoidal Limestone (Calcite / CaCO3)
sedimentary
Spinosaurus Tooth Fossil
Spinosaurus aegyptiacus (Calcium Phosphate/Apatite)
sedimentary
Favosites (Fossil Coral)
Favosites (Extinct Tabulate Coral)
sedimentary
Belemnite Fossil (Guard)
Belemnoidea (Carbonate/Calcite replacement)
sedimentary
Rugose Coral Fossil
Rugosa (Order)
sedimentary
Bivalve Fossil (Clam)
Class Bivalvia (Calcium Carbonate, CaCO3)
sedimentary
Gastropod Fossil (Snail)
Gastropoda (Internal mold/Steinkern)
sedimentary
Fossil Shark Tooth
Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth
sedimentary
Crinoid Fossil in Chert
Crinoid (Class Crinoidea) in Microcrystalline Quartz (SiO2)
sedimentary
Honeycomb Coral Fossil
Favosites (extinct genus of tabulate coral)
sedimentary
Horn Coral Fossil
Rugosa (extinct order of solitary corals)
sedimentary
Calamites (Fossil Plant)
Calamites (Genus), belonging to the class Equisetopsida
sedimentary
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Nodule)
Microcrystalline Silica (SiO2)
sedimentary
Sandstone (Quartz-rich Pebble)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Crinoid Fossil Marble
Crinoidal Limestone / Phylum Echinodermata
sedimentary
Amber in Matrix
Succinite (Carbon-based organic polymer)
Organic (Sedimentary context)
Sandstone or Mudstone
Sedimentary Rock
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Coquina / Shelly Sandstone
Calcareous Sandstone / Coquina
sedimentary
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Sandstone (likely Conglomerate or Gritstone)
Arenite (SiO2 based)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Amber
Succinite (with formula approximately C10H16O)
Organic mineraloid
Limestone
Calcareous sedimentary rock (CaCO3)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Gastropod Steinkern (Fossil Snail Internal Mold)
Class Gastropoda (Internal Mold)
sedimentary
Shale
Fissile Siliciclastic Sedimentary Rock
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale
Fissile mudstone (rich in clay minerals and quartz)
sedimentary
Coal
Anthracite / Bituminous Coal
sedimentary
Kambaba Jasper
Stromatolite (Microbial mat fossil in silicified sediment)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Limestone with Chert Nodules
Sedimentary Calcium Carbonate (CaCO3) with Microcrystalline Silica (SiO2) inclusions
sedimentary