Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Category
Igneous And Fossil
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Amber
Succinite (Fossilized Tree Resin, C10H16O)
gemstone
Chert (Nodule)
Chert (mainly Microcrystalline or Cryptocrystalline Quartz, SiO2)
sedimentary
Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Amber
Succinates (Fossilized Tree Resin)
mineraloid
Sandstone (Quartzose Sandstone)
Arenite (SiO2 primarily)
sedimentary
Sandstone
Arenite (SiO2 principal component)
sedimentary
Amber
Succinite (specifically for Baltic amber); chemical formula approximately C10H16O
Mineraloid
Petrified Wood
Silicified Wood (primarily SiO₂ - Silicon Dioxide)
metamorphic
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Moss Agate / Carnelian Agate
Silicon Dioxide (SiO2) with iron and manganese inclusions
mineral
Dinosaur Bone (Gembone)
Silicified Dinosaur Bone (SiO2 replacing organic tissue)
sedimentary
Fighting Conch (Sea Shell)
Strombus alatus (primarily composed of Calcium Carbonate / CaCO3)
mineral
Petrified Wood
Silicified Wood (SiO2 permineralization)
sedimentary
Petrified Wood (Silicified Wood)
Silicified Wood (primarily Chalcedony/Quartz, SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Coquina
Biogenic Limestone (Calcitic shells)
sedimentary
Shale
Shale (composition varies: primarily clay minerals and quartz)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone Cobble
Sedimentary Limestone (CaCO3)
sedimentary
Kambaba Jasper
Stromatolite Jasper (Microcrystalline Quartz with Fossilized Cyanobacteria)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Chert Concretion / Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Cone-in-cone structure (Limestone)
Cone-in-cone structure (Secondary Sedimentary Structure)
sedimentary
Pyrite Sun (Pyrite Dollar)
Iron Disulfide (FeS2)
mineral
Reddish Brown Claystone or Siltstone
Argillite / Siltstone / Claystone
sedimentary
Sandstone (Pebble)
Arenite (SiO2 based)
sedimentary
Fossilized Shark Tooth
Carcharodon (Galeocerdo sp. or Lamniform)
mineral
Fossiliferous Limestone
Calcium carbonate (CaCO3) with marine fossils
sedimentary
Shale
Sedimentary rock composed of clay minerals and quartz
sedimentary
Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Sandstone or Mudstone
Sedimentary Rock (Sandstone/Mudstone)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Coquina
Biogenic Limestone (Calcite/Aragonite)
sedimentary
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Fossiliferous Limestone (Coral Fossil)
Calcium Carbonate (CaCO3) with Colonial Coral inclusions
sedimentary
Ironstone (likely Ferruginous Siltstone/Sandstone)
Ferruginous sedimentary rock (FeOx-rich clastic)
sedimentary