Burmese Amber (Burmite)
Burmite (C10H16O)
mineraloid
Category
Sedimentary (Fossilized)
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Fossil crinoid stem segment (columnal)
Crinoidea; commonly preserved as calcite ossicles, often called entrocrinite
fossil
Likely weathered fossil bone fragment
Indeterminate fossilized bone; taxonomic identification requires microscopy and locality data
fossil
Fossil Coral
Hexagonaria or Rugose Coral (petoskey stone / fossilized rugose or tabulate coral)
fossil
Petoskey Stone
Hexagonaria percarinata
fossil
Dendritic Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
mineral
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
mineral
Amber
Succinite (specifically for Baltic amber); Complex mixture of organic compounds (C10H16O)
Organic Mineraloid
Amber
Succinite (Formula: C10H16O)
Mineraloid
Montana Moss Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Fossilized Crinoid Stem
Crinoidea (Echinodermata)
fossil
Amber
Succinite (approximate formula C10H16O)
mineraloid
Ammonite Fossil (Polished Half / Cleoniceras)
Ammonoidea (Subclass), often Cleoniceras genus; fossilized with Calcite (CaCO3) and Aragonite
Sedimentary
Fossilized Shark Tooth (Dermal Denticle or worn tooth fragment)
Elasmobranchii (fossil remains)
sedimentary
Petoskey Stone
Hexagonaria percarinata
fossil
Amber (Burmite)
Fossilized tree resin (Succinite variant)
Organic mineraloid
Fossilized Coral (Petrified Coral)
Anthozoa fossil
fossil
Petoskey Stone (Fossilized Rugose Coral)
Hexagonaria percarinata
fossil
Amber (Cherry or Red variety)
Succinite (with various trace amounts of organic compounds)
Organic Gemstone (not a rock)
Fossil brachiopod or bivalve shell
Likely a fossilized brachiopod; precise genus cannot be determined from the photograph
fossil
Petrified Wood
Silicified Wood (Permineralized Lycopsid, Conifer, or Hardwood)
fossil
Fossil Coral
Hexagonaria (or Rugose/Tabulate coral fossilized in calcium carbonate)
fossil
Fossil Coral (Petoskey Stone / Rugose Coral)
Hexagonaria percarinata (or similar fossilized rugose/tabulate coral)
fossil
Dendritic Opal
Hydrated Silica (SiO2·nH2O) with Manganese or Iron Oxide inclusions
mineral
Fossilized Shark Tooth (Otodus obliquus)
Otodus obliquus (Mineral composition: Bio-apatite/Calcium Phosphate replaced by various minerals)
sedimentary (fossil)
Fossilized Rugose Coral (Horn Coral)
Order Rugosa (extinct tetra-coral)
sedimentary
Fossilized Rugose Coral (Horn Coral)
Rugosa (Order) - often Grewingkia or Zaphrenthis
sedimentary
Amber (and Citrine Quartz)
Succinite (Amber) and Silicon Dioxide (SiO2)
Organic Mineraloid and Mineral
Amber
Succinit (C10H16O)
mineraloid
Fossilized Coral (Petoskey Stone type)
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Fossilized Coral (Petoskey Stone type)
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Coral Fossil / Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Sand Tiger Shark Tooth (Fossil)
Carcharias taurus (fossilized dentin/enameloid)
fossil
Amber
Succinite (Fossilized Tree Resin, C10H16O)
mineral
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
fossil
Amber
Amber (Succinite), fossilized tree resin
Mineraloid
Amber
Succinite (a common variety of fossilized resin)
mineral
Amber (Rough Baltics/Beach Specimen)
Succinicum (Organic Gemstone - Fossilized Resin)
mineral
Fossilized Shark Tooth (Otodus obliquus)
Otodus obliquus (composed primarily of Fluorapatite)
mineral
Fossil Coral (Tabulate Coral Fragment)
Anthopleura / Tabulata (CaCO3 - Calcium Carbonate)
fossil