Shale
Shale (Fine-grained clastic sedimentary rock)
sedimentary
Category
Organic (Paper And Cellulose)
Browse organic (paper and cellulose) specimens identified by the Rock Identifier community.
Learn about Organic (Paper And Cellulose) in the encyclopedia
View all →
Silty Shale or Mudstone
Siltstone/Mudstone (Clastic Sedimentary Rock)
sedimentary
Stardust (Micrometeorite)
Chondrite / Micrometeorite (Extraterrestrial Silicate)
igneous
Mosasaur Tooth Fossil
Mosasaurus sp.
fossil
Red Jasper / Chert
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Mammoth or Mastodon Tooth Fossil
Proboscidea tooth (Mammuthus or Mammut)
fossil
Fossil Shark Tooth
Otodus sp. (likely Otodus obliquus) fossil
fossil
Shark Tooth Fossil
Chondrichthyes (class) fossilized tooth
fossil
Mammoth Tooth
Mammuthus primigenius (Tooth fragment)
fossil
Siltstone with Fossil Cast
Sedimentary Rock (Siltstone / Fine-grained Sandstone)
sedimentary
Fossil Shark Tooth
Carcharodon or Carcharias fossil (Vertebrate Fossil)
sedimentary
Dinosaur Bone (Gembone)
Agatized Dinosaur Bone (Silicified Paleo-osteoid)
metamorphic
Chert Pebble with Inclusion
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2), Microcrystalline Quartz
sedimentary
Fossilized Shark Tooth
Elasmobranchii dentition (calcium phosphate / hydroxyapatite)
fossil
Fossilized Shark Tooth (Fragment)
Elasmobranchii fossil (likely Cretalamna or Squalicorax genus)
sedimentary
Quartzite with inclusions
Quartzite
metamorphic
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
sedimentary
Fossilized Bivalve Shell
Bivalvia (Phylum Mollusca)
fossil
Chert (Iron-stained)
Silicon Dioxide (SiO2)
sedimentary
Chert (Field Stone)
Silicon Dioxide (SiO2)
sedimentary
Chert (often called Flint or Jasper)
Cryptocrystalline quartz (SiO2)
sedimentary
Flower Jasper
Agatized Fossil Coral / Chalcedony (SiO2)
sedimentary
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Mudstone variety with Oxidation)
Silicon dioxide (SiO2)
sedimentary
Green Slate or Metamorphic Rock with Moss/Lichen
Metamorphic rock / Phyllite or Slate variant
metamorphic
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossilized Shark Tooth
Chondrichthyes tooth
fossil
Megalodon Shark Tooth
Otodus megalodon
fossil
Dinosaur Claw Fossil
Fossilized Theropod Claw (Vertebrate Palaeontological Specimen)
fossil
Fossilized Shark Tooth (Otodus obliquus)
Otodus obliquus (Mineralized Apatite / Bio-apatite)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified Wood (SiO2)
fossil
Fossilized Shark Tooth
Eocene Lamniformes (Mackerel Shark clade)
fossil
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Asphalt / Bituminous Aggregate
Bituminous mixture (Hydrocarbon-based sediment)
sedimentary
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Anthracite Coal
Anthracite
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony - SiO2)
sedimentary
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (River Cobble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary