Shungite
Non-crystalline carbon (similar to anthracite coal or meta-anthracite)
Category
Browse organic (non rock) specimens identified by the Rock Identifier community.
Shungite
Non-crystalline carbon (similar to anthracite coal or meta-anthracite)
Shale with Plant Fossils / Carbonaceous Shale
Laminated Mudrock (Siliciclastic)
Sandstone (Weathered Coastal Boulder)
Arenite (composed primarily of SiO2)
Limestone ( weathered ) / Chert Nodular Rock
Sedimentary rock (primarily Calcium Carbonate, CaCO3, with Microcrystalline Quartz, SiO2)
Anthracite Coal
Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)
Shale (with minor calcite veining)
Clastic sedimentary rock (primarily clay minerals and quartz)
Amber (Cherry or Red variety)
Succinite (with various trace amounts of organic compounds)
Fossil Shark Tooth (Sand Tiger or Mackerel Shark)
Carcharias sp. or Otodus sp. replaced by Hydroxylapatite/Calcium Carbonate
Amber
Resinite / Fossilized Tree Resin
Amber
Succinite (specific to Baltic amber), fossilized tree resin
Fossiliferous limestone (likely ammonite/gastropod-bearing)
Bioclastic limestone; predominantly calcite (CaCO₃)
Banded Chert
Microcrystalline Quartz (SiO2)
Raw Amber / Resin Mineral
Succinite (Fossilized Tree Resin)
Amber
Succinite (with empirical formula approximately C10H16O)
Chert Pebble
Chert (SiO2)
Amber
Succinite (Formula: C10H16O)
Amber (Copal)
Succinate (Fossilized Tree Resin)
Graphite
Graphite (Carbon, C)
Quartz Veined Basalt
Mafic Volcanic Rock with Microcrystalline Quartz (SiO2)
Chert (River Pebble)
Chert (Cryptocrystalline Quartz, SiO₂)
Zebra Stone (Banded Chert or Limestone)
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) inclusions
Fossil Shark Tooth
Otodus sp. or Carcharocles sp. (likely fossilized Chondrichthyes)
Shungite
Non-crystalline carbon (allotrope of carbon)
Amber in Matrix
Succinite (Carbon-based organic polymer)
Baroque Pearl
Biogenic Calcium Carbonate (Aragonite/Conchiolin)
Amber
Succinates (Organic Gemstone)
Shungite
Non-crystalline carbon (Fullerenes)
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
Shungite
Non-crystalline carbon (C)
Shungite
Shungite (Non-crystalline carbon, C)
Amber
Succiniferous fossil resin (C10H16O)
Amber
Succinite (C10H16O)
Shungite
Non-crystalline carbonoid (Shungite)
Chert (Jasper variation)
Silicon Dioxide (SiO2)
Shale or Argillite
Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)
Amber / Fossilized Resin
Succinite / Fossilized Tree Resin
Amber
Succinates (Fossilized Tree Resin)
Amber Dragonfly Brooch
Succinited (Baltic Amber)
Fossilized Shark Tooth (Megalodon or Carcharocles species fragment)
Otodus megalodon / Carcharocles spp. (Apatite / Calcium Phosphate)
Quartz with Mica/Host Rock
Silicon Dioxide (SiO2) with Phyllosilicates