Yellow-brown translucent mineral fragment, likely citrine or amber
Quartz (SiO₂), if citrine; succinite (fossil resin), if amber
mineral
Category
Organic Specimen (Fossil)
Browse organic specimen (fossil) specimens identified by the Rock Identifier community.
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Fossilized Bivalve Shell
Bivalvia (fossil specimen)
sedimentary
Fossilized Shark Tooth (fragment)
Elasmobranchii (Class) fossil
fossil
Fossilized Gastropod / Coral
Phylum Mollusca / Cnidaria (Silicified or Calcified)
fossil
Polished amber cabochon pendant
Amber (fossilized plant resin), chiefly polymerized succinite; approximate formula C10H16O
gemstone
Fossiliferous Limestone (Coquina / Shell Limestone)
Bioclastic Limestone (CaCO3)
sedimentary
Fossilized mammoth molar fragment
Proboscidean molar enamel and dentine, commonly Mammuthus spp.
fossil
Brachiopod Fossil in Limestone
Phylum Brachiopoda embedded in sedimentary rock
fossil
Mammoth Molar Fossil
Mammuthus primigenius (Tooth fragment)
fossil
Fossiliferous Limestone / Petrifaction
Sedimentary rock with fossil inclusions / Calcium Carbonate (CaCO3)
fossil
Fossil Shell
Brachiopod or Mollusk fossil
fossil
Fossiliferous Flint
Microcrystalline Quartz (SiO2) with Echinoid Fossil
sedimentary
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Black Limestone with Calcite Veining
Bituminous Limestone (CaCO3 with Organic Carbon inclusions)
sedimentary
Fossil Coral
Phylum Cnidaria / Rugosa or Tabulata
fossil
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Fossil-bearing Sedimentary Rock
Sedimentum cum fossili
fossil
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Petrified Wood / Fossilized Bone
Silicified / Mineralized Fossil (Silica SiO2)
fossil
Fossilized Nut / Coprolite / Concretion
Trace Fossil / Permineralized Plant Material
fossil
Sand Tiger Shark Tooth
Carcharias taurus (fossilized)
fossil
Petrified wood
Silicified wood; commonly quartz/chalcedony (SiO₂) replacing organic tissue
fossil
Amber (fossilized tree resin)
Fossilized plant resin; commonly succinite (not a mineral, largely organic polymer)
fossil
Fossilized Shark Tooth (likely Sand Tiger Shark)
Carcharias taurus (fossilized hydroxyapatite/calcium phosphate)
fossil
Fossil Coral
Scleractinia or Anthozoa (Fossilized)
fossil
Weathered iron-rich limestone or sandstone
Ferruginous carbonate/siliciclastic rock; likely calcite- and iron-oxide-bearing matrix
sedimentary
Fossil Shark Tooth
Chondrichthyes (class)
fossil
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Fossiliferous limestone / shell hash rock
Bioclastic limestone (calcarenite or coquina), dominantly CaCO₃
sedimentary
Mammoth or Mastodon Tooth Fossil
Mammuthus / Mammut tooth
fossil
Fossiliferous Limestone (with Crinoids)
CaCO3 (Calcium Carbonate)
sedimentary
Chert Concretion / Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Pyritized Ammonite
Ammonitida (replaced by Iron Disulfide, FeS2)
sedimentary
Fossilized Echinoid (Sea Urchin)
Echinoidea (Fossil)
sedimentary
Fossiliferous limestone with a fossil sea urchin
Bioclastic limestone containing an echinoid fossil (class Echinoidea)
sedimentary
Fossiliferous Limestone
Calcium carbonate (CaCO3) matrix with fossil inclusions
fossil
Amber
Succinite (C10H16O)
gemstone
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with fossil inclusions
sedimentary
Tumbled amber-like gemstone
Likely amber (fossilized resin; organic mineraloid), possibly citrine or yellow-brown glass imitation
gemstone