Quartz Veined Basalt
Mafic Volcanic Rock with Microcrystalline Quartz (SiO2)
igneous
Category
Organic (Non Rock)
Browse organic (non rock) specimens identified by the Rock Identifier community.
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Shungite
Non-crystalline carbon (Fullerene-bearing)
mineral
Possible petrified wood or fossilized tooth
Unidentified silicified fossil; exact identification requires close examination
fossil
Amber
Succinite (Organic Mineraloid)
mineral
Amber
Succinite (a fossilized organic resin)
mineral
Fossilized Shell Fragment
Invertebrate marine fossil, likely calcium carbonate replacement
fossil
Fossilized Shark Tooth (Megalodon or Carcharocles species fragment)
Otodus megalodon / Carcharocles spp. (Apatite / Calcium Phosphate)
fossil
Fossilized bone, likely a large vertebrate limb or rib fragment
Petrified bone; exact taxon indeterminate from the image
fossil
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
sedimentary
Amber
Succinates (Fossilized Tree Resin)
mineral
Amber
Succiniferous fossil resin (C10H16O)
gemstone
Amber
Succinite (C10H16O)
mineral
Weathered fossil bone fragment (identification uncertain)
Fossilized bone; exact taxon and mineral composition cannot be determined from the image
fossil
Amber Dragonfly Brooch
Succinited (Baltic Amber)
fossil
Rough Amber (likely Copal or immature Amber)
Organic gemstone / Succinite (if Baltic)
mineral
Amber / Fossilized Resin
Succinite / Fossilized Tree Resin
mineral
Amber
Succinite (Organic Mineraloid) - C10H16O
mineral
Amber
Amber (Amorphous Organic Hydrocarbon)
mineral
Anthracite Coal
Carbon (with trace impurities)
sedimentary
Likely bituminous coal
Coal, predominantly carbon-rich organic matter; rank and composition cannot be confirmed from the image
sedimentary
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Coal (Bituminous / Anthracite)
Organic Sedimentary Rock (Carbonaceous Rock)
sedimentary
Amber
Succinite (approximate formula C10H16O)
mineral
Amber
Succinite / Fossilized Resin (C10H16O)
fossil
Amber
Fossilized Tree Resin
gemstone
Amber
Succinite (fossilized resin)
mineral
Amber
Succinite (specifically for Baltic Amber), Formula: C10H16O
Organic Gemstone (often associated with Sedimentary sequences)
Amber
Succinite (approximate formula C10H16O)
mineral
Amber
Succinite (Fossilized Resin)
gemstone
Amber
Succinicum (Organic Gemstone - Resinite)
mineraloid
Amber with inclusion
Amber (Fossilized Tree Resin)
mineral
Weathered porphyritic volcanic rock (likely basaltic andesite)
Porphyritic basaltic andesite; mineral assemblage likely plagioclase, pyroxene, and iron oxides
igneous
Anthracite Coal
Anthracite (Carbon-based organic sedimentary rock exposed to metamorphic heat/pressure; Chemical composition is approximately 86%–98% Carbon)
metamorphic
Anthracite Coal
Anthracite
sedimentary
Shale or Mudstone (Based on appearance)
Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)
Sedimentary
Coquina or Fossiliferous Limestone
Fossiliferous Calcarenite (CaCO3)
sedimentary
Amber
Succinicum (Organic polymer, largely C10H16O)
Organic Mineral
Amber
Succinite (C10H16O)
mineral
Amber
Succinite (C10H16O)
mineral
Sea Shell (Mollusk Shell)
Calcium Carbonate (Aragonite/Calcite)
fossil
Amber
Fossilized tree resin
gemstone
Shale or Argillite
Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)
Sedimentary or Metamorphic (low grade)