Amber
Succinite (a fossilized organic resin)
mineral
Category
Sedimentary (Biogenic Sediment Or Biological Remain)
Browse sedimentary (biogenic sediment or biological remain) specimens identified by the Rock Identifier community.
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Petrified Wood
Silicified Wood (SiO2 / Quartz pseudomorph after wood)
fossil
Augite Shell / Turret Snail Fossil (or Recent Seashell)
Gastropoda (Class) / Turritellidae (Family)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified wood (primarily SiO2 - Silicon Dioxide/Quartz)
metamorphic
Amber
Succinite (a fossilized organic resin containing succinic acid)
mineraloid
Fossil Coral in Limestone
Scleractinia (Anthomastodon or similar) in Sedimentary Calcarenite
fossil
Bivalve Fossil (Clam Fossil)
Class Bivalvia (likely Gryphaea or similar Order)
fossil
Amber
Succinite (formula varies, primarily C10H16O)
Mineraloid (Organic)
Fossil shark teeth
Likely fossilized shark teeth; exact species indeterminate from the image, possibly Carcharhiniformes or related taxa
fossil
Limestone with Algal/Lichen Colonization
Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Limestone
Fossiliferous Calcilutite / Biomicrite
sedimentary
Petrified Wood (Silicified Fossil)
Silicified Wood (SiO2)
sedimentary
Petrified Wood / Fossilized Wood
Silicified Wood (Silicon Dioxide - SiO2)
fossil
Petrified Wood
Fossilized wood / Silicified wood
Sedimentary / Fossil
Shale or Siltstone
Sedimentary Rock (Siliciclastic)
sedimentary
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Quartz Geode
Silicon Dioxide (SiO2) in a Secondary Sedimentary/Volcanic cavity
mineral
Shale with Coprolite influence
Argillaceous sedimentary rock (Shale/Mudstone)
sedimentary
Sandstone (likely Siltstone variety)
Arenite / Siltstone (primary mineral SiO2)
sedimentary
Amber
Succinite (with formula approximately C10H16O)
Organic mineraloid
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Amber
Succinite (Resinous fossilized tree sap)
Mineraloid
Petrified Wood
Silicified Wood (Silicon Dioxide - SiO2)
fossil
Fossilized Brachiopod
Phylum Brachiopoda (General mineral composition: Calcite/CaCO₃ or Silica/SiO₂)
sedimentary
Fossilized Shark Tooth (Sand Tiger)
Carcharias sp. (Fossilized Tooth)
fossil
Amber / Copal
Fossilized Tree Resin (Succinate)
Mineraloid
Petrified Wood
Silicified Wood (SiO2)
fossil
Oyster shell fragment
Ostreidae shell; primarily calcite (CaCO₃)
fossil
Chert Pebble (with Quartz Vein)
Chert (Cryptocrystalline Silica - SiO2)
sedimentary
Fossilized bivalve shell fragment
Fossil Mollusca, likely a bivalve (class Bivalvia); exact genus cannot be determined from the image
fossil
Amber
Succinite (fossilized resin)
Organic Mineraloid
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Coquina / Fossiliferous Limestone
Coquina (composed primarily of Calcium Carbonate / CaCO3)
sedimentary
Weathered sandstone or iron-rich mudstone fragment
Clastic sedimentary rock, likely quartz–feldspar sandstone with iron-oxide cement
sedimentary
Chert (Mudstone)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Iron-stained)
Microcrystalline silica (SiO2) with trace Iron oxide (Fe2O3)
sedimentary
Chert (Siliceous Mudstone variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert
Chert (microcrystalline quartz, SiO2)
sedimentary
Fossilized Shark Tooth
Chondrichthyes tooth
fossil