Amber
Succinite (Resinous fossilized tree sap)
Mineraloid
Category
Sedimentary (Fossilized Organic Remains)
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Amber
Succinite (a fossilized organic resin containing succinic acid)
mineraloid
Petoskey Stone
Hexagonaria percarinata (Fossilized Coral)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Palm Wood Fossil
Palmoxylon
fossil
Chert (River Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Crinoid Stem Fossil
Crinoid columnal (Class Crinoidea)
sedimentary
Mookaite Jasper
Siliceous (chert) sedimentary rock, a form of Jasper
Sedimentary
Fossilized Shark Tooth
Carcharodon carcharias (fossilized) / Hydroxyapatite permineralized with silica or iron
sedimentary
Amber
Succinite (fossilized resin)
mineral
Amber (specifically Cherry Amber)
Succinite (with the chemical formula C10H16O)
Organic Gemstone (not a mineral)
Fossiliferous Limestone (Murchisonia/Gastropod Limestone)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Dragon Stone
Ohko Stone (Argillaceous sedimentary rock)
sedimentary
Chert Nodule (Fossiliferous Chert)
Microcrystalline Quartz (SiO2)
sedimentary
Fossilized Shark Tooth
Lamniformes (order) fossil
fossil
Fossilized Shark Tooth (Dermal Denticle or worn tooth fragment)
Elasmobranchii (fossil remains)
sedimentary
Fossilized Shark Tooth
Carcharocles sp. (likely Lemon or Sand Tiger)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Crinoid Stem Fossil
Class Crinoidea (Phylum Echinodermata), often preserved in Limestone or Calcite (CaCO3)
sedimentary
Fossilized Shark Tooth
Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)
sedimentary
Fossilized Shark Tooth
Eocene Lamniformes (Mackerel Shark clade)
fossil
Amber
Succinite (fossilized resin)
Mineral
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Amber
Succinite (organic fossilized resin)
mineraloid
Amber
Succinates (Organic Fossilized Resin)
mineraloid
Amber
Succinite (specifically for Baltic amber); Fossilized Tree Resin (C10H16O)
Organic Mineraloid
Amber
Succinite (fossilized organic resin)
mineral
Amber
Succinite (Fossilized Resin)
gemstone
Amber with Organic Inclusions
Succinite (fossilized resin)
mineraloid
Fossilized Wood (Petrified Wood) and Associated Rocks
Silicified Wood / Xylopal
fossil
Fossilized Shark Tooth
Chondrichthyes (Class) fossil
fossil
Crinoid Stem Columns (Fossil)
Crinoidea (Class); often composed of the mineral Calcite (CaCO3)
sedimentary
Fossilized Coral (Favosites)
Favosites goldfussi / Tabulata
sedimentary
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Amber
Succinates (Organic Fossilized Resin)
mineral
Amber and Citrine Quartz
Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)
mineral
Amber
Succinite
mineraloid
Fossil Shell (Bivalve)
Phylum Mollusca, Class Bivalvia (typically composed of Calcium Carbonate / CaCO3)
sedimentary
Amber
Fossilized Tree Resin
gemstone
Fossilized Shark Tooth
Chondrichthyes (class)
fossil
Amber
Succinite (Fossilized Resin)
gemstone