Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Category
Organic (Biological Organism)
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Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Chert / Flint
Cryptocrystalline Quartz (SiO2)
sedimentary
Flint in Limestone (Chert Nodule)
Sedimentary rock containing microcrystalline quartz (SiO2) within a carbonate matrix
sedimentary
Amber (in Matrix/Shale)
Amber (Fossilized Tree Resin)
mineral
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Bioclasts
sedimentary
Petrified Bone (Fossil Bone)
Per mineralization fossil bone (varies by organism, predominantly replacement by SiO2 - Quartz/Chalcedony)
fossil
Amber (Rough Baltics/Beach Specimen)
Succinicum (Organic Gemstone - Fossilized Resin)
mineral
Fossilized Shark Tooth (Otodus)
Otodus sp. (calcium phosphate/hydroxylellite)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Bioclasts
sedimentary
Fossilized Brachiopod
Articulata (Class) / Brachiopoda (Phylum)
sedimentary
Amber
Succinite
Mineraloid
Amber
Succinrite (Organic Gemstone)
mineraloid
Brachiopod Fossil
Phylum Brachiopoda (replaced by Calcite or Silica)
sedimentary
Amber
Succiniferous fossil resin (C10H16O)
mineral
Amber
Succinite (Approximate formula: C10H16O)
Mineraloid
![Fossilized bone fragment (probable mammalian tooth or bone) (Mineralized bone, commonly hydroxyapatite [Ca5(PO4)3(OH)] replaced or impregnated by silica/calcite) — fossil](https://media.rock.id/fossilized-bone-fragment-probable-6435bbec-570b-407e-9c9f-870b904b8d23-thumbnail.jpg)
Fossilized bone fragment (probable mammalian tooth or bone)
Mineralized bone, commonly hydroxyapatite [Ca5(PO4)3(OH)] replaced or impregnated by silica/calcite
fossil
Chert with Iron Oxide Staining
Microcrystalline Quartz (SiO2) with Limonite/Goethite staining
sedimentary
Pearl (incorporated into jewelry)
Aragonite and Calcite (CaCO3)
mineral
Amber
Succinate (Succinite for Baltic varieties)
Organic Mineraloid
Amber
Succinite (approximate formula C10H16O)
mineral
Fossiliferous Limestone (Coral Fossil)
Scleractinian Coral in Calcium Carbonate (CaCO3)
sedimentary
Amber
Succiniferous organic material (Succinite)
fossil
Chert (Yellow Jasper variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Aragonite (Yellow/Honey Tumble)
Calcium Carbonate (CaCO3)
mineral
Amber
Succinite (approximate formula C10H16O)
mineraloid
Limestone with fossil crinoid stems
Calcium Carbonate (CaCO3) containing Crinoidea fossils
sedimentary
Fossiliferous Limestone
Calcium carbonate matrix with macrofossils (CaCO3)
fossil
Amber
Succinite (C10H16O)
Mineraloid
Pearl
Calcium Carbonate (Aragonite) with Conchiolin; formula: CaCO3
mineral
Trace Fossil (Lichenandites or Rhynie Chert Chert with Microfossils)
Trace fossil in microcrystalline quartz (SiO2)
fossil
Amber
Succinite (with approximate formula C10H16O)
mineraloid
Fossiliferous Limestone
Fossiliferous Calcilutite / Biomicrite
sedimentary
Amber
Succinite (C10H16O)
mineral
Pearl
Nacre (aragonite, CaCO₃, in a conchiolin matrix)
gemstone
Fossil-bearing limestone slab
Bioclastic limestone, likely containing brachiopod or bivalve impressions
fossil
Brachiopod Fossil
Phylum Brachiopoda (order potentially Spiriferida)
fossil
Hag Stone
Perforated Sedimentary Rock (typically Chert or Limestone)
sedimentary
Amber
Succinite (approximate formula C10H16O)
mineral
Fossiliferous limestone (likely stromatoporoid/coral limestone)
Calcite-rich carbonate rock, chiefly CaCO₃; visible fossil structures may be tabulate coral or stromatoporoid
fossil
Tahitian Pearl
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
mineral
Fossiliferous Shale Matrix
Clastic Sedimentary Rock with Brachiopod or Mollusk shell fragments
sedimentary