Biological Specimen (Domestic Dog)
Canis lupus familiaris
Organic (Non-rock)
Category
Organic (Non Rock)
Browse organic (non rock) specimens identified by the Rock Identifier community.
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Oak Wood (Wood Grain Pattern)
Quercus (genus)
Organic (Non-rock)
Quartz pebble or seed/crumb
SiO2 (if quartz)
mineral
Possible smooth beach pebble (identity uncertain)
Unidentified fine-grained siliceous pebble; possibly chert or quartzite
sedimentary
Coal
Coal (Sedimentary Rock / Organic Rock)
sedimentary
Manganese-coated Sandstone
Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)
sedimentary
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Grass (Organic Matter/Soil)
Poaceae (family of monocotyledonous flowering plants)
Organic Materia (Not a rock or mineral)
Bituminous Coal
Organic sedimentary rock (humic coal)
sedimentary
Coal
Anthracite / Bituminous Coal
sedimentary
Shungite (Noble/Type II)
Non-crystalline carbon (Fullerene-bearing carbonaceous rock)
metamorphic
Coal (Bituminous or Anthracite)
Carbonaceous Sedimentary Rock
sedimentary
Coal (Anthracite / Bituminous)
Organic Sedimentary Rock (Carbon-based)
sedimentary
Shale
Shale (comprised mostly of clay minerals and quartz)
sedimentary
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Pearl
Calcium carbonate (CaCO3) in the form of aragonite
gemstone
Fossiliferous Rock (likely Dinosaur Fossil in Matrix)
Permineralized Vertebrate Fossil (Calcium Carbonate/Silica replaced bone material)
sedimentary
Shungite
Non-crystalline carbon (high-carbon metamorphic rock)
metamorphic
Bituminous Coal
Organic-rich sedimentary rock (Complex hydrocarbons)
sedimentary
Note: Item is not a geological specimen
Homo sapiens (Dermal Appendage: Pilus)
Organic / Biological
Chert Cobble / Quartzite River Stone
Microcrystalline Quartz (SiO2) / Quartzite
sedimentary
Concretion (likely iron-rich sandstone or claystone concretion)
Diagenetic carbonate/iron-oxide concretion; exact mineralogy requires testing
sedimentary
Black Jasper (Black Onyx substitute)
Silicon Dioxide (SiO2) with carbonaceous impurities
sedimentary (microcrystalline quartz)
Anthracite Coal
Anthracite (Carbon-based organic sedimentary/metamorphic rock)
metamorphic
Shale
Shale (Fine-grained clastic sedimentary rock)
sedimentary
Weathered River Rock (likely Chert or Basalt with algae)
Silicon dioxide (SiO2) with organic biofilm
sedimentary
Amber (Copal)
Succinite (fossilized resin)
mineral
Baroque cultured pearl necklace
Pearl: nacre composed mainly of aragonite (CaCO₃) and conchiolin
gemstone
Amber
Fossilized Tree Resin
gemstone
Ironstone Concretion
Ironstone (Siderite/Goethite/Hematite matrix)
sedimentary
Chert (Pebble)
Microcrystalline to Cryptocrystalline Quartz (SiO2)
sedimentary
Coal (Bituminous)
Organic sedimentary rock primarily consisting of carbon (C)
sedimentary
Shale or Siltstone
Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)
sedimentary
Shale
Shale (clay-sized silicate minerals)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Anthracite Coal
Anthracite (Carbon-based organic sedimentary rock transitioned to metamorphic)
metamorphic
Chert (Pebble)
Silicon Dioxide (SiO2)
sedimentary
Fossilized Shark Tooth or Bone Fragment
Vertebrate Fossil (likely Carcharodon or similar genus)
fossil
Pink Opal
Amorphous Hydrous Silica (SiO2·nH2O)
mineral
Chert (Jasper / Petrified Wood)
Microcrystalline Quartz (SiO2)
sedimentary
Shungite
Non-crystalline carbon (similar to anthracite coal or meta-anthracite)
metamorphic
Fossiliferous Sandstone / Fossil Fragment
Fossiliferous Sedimentary Matrix with Indeterminate Fossil Material
fossil