Amber
Succinite
mineraloid
Category
Sedimentary (Fossilized)
Browse sedimentary (fossilized) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Fossilized) in the encyclopedia
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Crinoid Stem Fossil
Crinoid ossicle (phylum Echinodermata)
fossil
Fossil bone fragment
Fossilized vertebrate bone; exact taxon undetermined
fossil
Dinosaur Claw Fossil
Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)
fossil
Sandstone
Arenite (primarily SiO2 with various cementing agents)
sedimentary
Fossilized Shell or Coral Fragment in Matrix
Invertebrate Fossil in Sedimentary Rock
fossil
Mookaite Jasper
Silicon Dioxide (SiO2) with various inclusions
sedimentary
Possible fossilized bone fragment
Indeterminate fossil bone; no species can be identified from this image
fossil
Picture Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Biggs Jasper (Picture Jasper)
Silicon Dioxide (SiO2) - Opaque Silicified Volcanic Ash
sedimentary
Petoskey Stone
Hexagonaria percarinata
sedimentary
Amber
Succinite
Mineraloid
Amber
Succinite (approximate formula C10H16O)
mineraloid
Amber
Succinicum (C10H16O)
mineral
Coal (Anthracite / Bituminous)
Organic Sedimentary Rock (Carbon-based)
sedimentary
Fossil ammonite
Ammonite (subclass Ammonoidea; exact species not identifiable from the image)
fossil
Petoskey Stone
Hexagonaria percarinata
fossil
Polished ammonite fossil
Ammonoidea; likely a Jurassic or Cretaceous ammonite, often sold as Cleoniceras or similar
fossil
Ironstone Concretion (Coprolite-like)
Goethite/Hematite Siderite Spheroid (FeCO3 or FeO(OH))
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Fossil gastropod shell
Gastropoda; species cannot be determined from the image
fossil
Pink shell fragment
Calcium carbonate, likely aragonite or calcite (CaCO₃); probably a bivalve or gastropod shell fragment
fossil
Petoskey Stone (Fossilized Rugose Coral)
Hexagonaria percarinata
sedimentary
Fossilized Insect in Nodular Matrix
Invertebrata / Insecta fossil in sedimentary concretion
fossil
Chert / Flint (with Crinoid Stem Molds)
Microcrystalline Quartz (SiO2)
sedimentary
Fossil Shell (Bivalve)
Phylum Mollusca, Class Bivalvia (typically composed of Calcium Carbonate / CaCO3)
sedimentary
Possible fossilized bone or tooth fragment
Indeterminate fossilized vertebrate material; mineralized hydroxyapatite replaced or coated by silica/carbonate
fossil
Coal (likely bituminous coal)
Bituminous coal; predominantly carbon with organic macerals and minor clay/pyrite
sedimentary
Likely fossilized bone or tooth fragment
Indeterminate fossil bone; mineral replacement commonly calcite, silica, or iron oxides
fossil
Fossil oyster shell
Ostrea or Exogyra sp. (identification uncertain)
fossil
Fossilized Limestone with Crinoid Stem
Carboniferous Limestone (containing Crinoidea ossicles)
fossil
Fossil coral fragment
Likely scleractinian coral; calcium carbonate, predominantly aragonite or recrystallized calcite (CaCO₃)
fossil
Amber-colored chalcedony (carnelian), possibly amber
Chalcedony: microcrystalline quartz (SiO₂); amber: fossilized tree resin
mineral
Fossil Belemnite Guard
Belemnitida (Order), often Hibolites or Neohibolites spp.
fossil
Likely weathered quartz-rich stone or fossil fragment
Indeterminate; possibly quartz-bearing sandstone, iron-stained quartz, or a fragmentary fossil
mineral
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinite (specifically for Baltic Amber), Formula: C10H16O
Mineraloid
Amber
Succinite (specifically for Baltic amber); chemical formula approximately C10H16O
Mineraloid
Spondylus Oyster Calcification / Fossilized Oyster
Spondylus (Thorny Oyster) / Calcium Carbonate (CaCO3)
sedimentary
Fossilized bivalve or brachiopod fragment
Indeterminate fossil shell, likely calcitic or aragonitic carbonate
fossil
Chert Nodule (Fossiliferous Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Fossilized Rugose Coral in Limestone
Order Rugosa in Sedimentary Matrix (CaCO3)
fossil