Pearl
Organic Mineral (CaCO3 with conchiolin)
mineral
Category
Organic Mineral
Browse organic mineral specimens identified by the Rock Identifier community.
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Fish Fossil in Limestone
Lycoptera (likely) in Micritic Limestone
sedimentary
Fossilized coral (likely honeycomb or branching coral)
Fossil coral; probable Scleractinia or Tabulata, composition mainly microcrystalline CaCO₃
fossil
Black Onyx and Mother of Pearl
Cryptocrystalline Quartz (SiO2) and Nacre (Calcium Carbonate)
mineral
Amber
Succinicum (Organic polymer, largely C10H16O)
Organic Mineral
Amber
Succinite
Organic Mineral
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
mineral
Pearl (Biogenic Mineral)
Calcium Carbonate (primarily Aragonite) with Conchiolin; CaCO3
mineral
Banded sandstone pebble
Quartz-rich lithic sandstone; exact provenance and composition require testing
sedimentary
Amber (Copal)
Fossilized Tree Resin
mineraloid
Amber
Succinite (formula varies, primarily C10H16O)
Mineraloid (Organic)
Amber (Raw)
Succinite (Fossilized Resin)
mineraloid
Amber and Citrine Quartz
Succinite (Amber) and Silicon Dioxide (SiO2 / Citrine)
mineral
Amber
Succinite (fossilized resin, C10H16O)
mineral
Amber
Succinicum (C10H16O)
mineral
Amber
Succinite (C10H16O)
mineraloid
Raw Amber / Resin Mineral
Succinite (Fossilized Tree Resin)
gemstone
Petrified Wood
Silicified wood (Quartz replacement, SiO2)
fossil
Amber
Resinite / Fossilized Tree Resin
mineral
Amber
Succinite (Fossilized Tree Resin)
mineraloid
Kidney Stone
Nephrolithiasis (Calcium Oxalate, Hydroxyapatite, or Uric Acid)
mineral
Soil with Mineral Detritus and Quartz Fragments
Regolith / Silicate Mineral Aggregate
sedimentary
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Amber
Succinite (with empirical formula approximately C10H16O)
Organic Mineraloid
Amber
Succinite (specific to Baltic amber), fossilized tree resin
Organic Mineraloid
Fossilized Bone
Petrified Bone / Biogenic Sedimentary
fossil
Amber
Succinite
Organic mineraloid
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
mineral
Fossilized Bone
Vertebrate fossil (mineralized bone)
fossil
Amber (Copal)
Succinate (Fossilized Tree Resin)
mineraloid
Black Limestone
Bituminous Limestone (Calcium Carbonate - CaCO3)
sedimentary
Amber
Succinite (Approximate formula: C10H16O)
mineral
Amber
Succinite (organic hydrocarbon)
mineraloid
Limestone or Sandstone Cobble
Sedimentary rock (Calcium carbonate or Quartz based)
sedimentary
Amber
Succinates (Fossilized Tree Resin)
mineraloid
Amber
Succinite (C10H16O)
mineral
Ironstone concretion / Limonitic Sandstone
Goethite/Hematite Cemented Sandstone (Hydrated Iron Oxide)
sedimentary
Chert (Jasper/Chalcedony mix)
Microcrystalline Quartz (SiO2)
sedimentary
Amber
Fossilized Tree Resin
gemstone
Garden Quartz (Lodolite / Inclusion Quartz)
Quartz with inclusions (SiO2 with various mineral inclusions)
gemstone
Freshwater Pearl
Aragonite / Biogenic Calcium Carbonate (CaCO3)
mineral
Fossilized Gastropod / Coral
Phylum Mollusca / Cnidaria (Silicified or Calcified)
fossil