Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Category
Synthetic Polymer (Synthetic Material)
Browse synthetic polymer (synthetic material) specimens identified by the Rock Identifier community.
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Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Quartz (Silicon Dioxide, SiO2 with impurities)
sedimentary
Fossil Shark Tooth
Chondrichthyes (Class)
fossil
Fossil Snail
Gastropoda fossil
fossil
Fossilized Bivalve Shell
Class Bivalvia (fossilized)
fossil
Seashell Fossil
Gastropoda fossil
fossil
Blue Cat's Eye Quartz (Heated/Dyed)
Silicon Dioxide (SiO2) with fibrous inclusions
mineral
Vuggy Limestone
Carbonate Sedimentary Rock with Vuggy Porosity (CaCO3)
sedimentary
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Flint
Chert (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Sandstone
Arenite (primarily SiO2)
sedimentary
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
sedimentary
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Shark Tooth Fossil
Carcharodonta (order Lamniformes), likely Carcharias spp.
fossil
Chert (Flint Nodular)
Silicon Dioxide (SiO2)
sedimentary
Chert Nodule (with Geode cavity)
Cryptocrystalline Quartz (SiO2)
sedimentary
Megalodon Shark Tooth Fossil
Otodus megalodon (fossilized in sedimentary matrix)
sedimentary
Black Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Geode (Unopened)
Vug or Geode (primarily Silicon Dioxide, SiO2)
sedimentary
Gypsum (Wallboard/Drywall)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
sedimentary
Chert Nodule
Chert (SiO2)
sedimentary
Chert (Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper
Quartz (Silicon Dioxide) with Hematite inclusions, SiO2
mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Chert (containing Flint and Calcareous inclusions)
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) impurities
sedimentary
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Man-made)
mineraloid
Fossil Shark Tooth
Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Bicolor Quartz Tumble
Silicon Dioxide (SiO2)
mineral
Diamond
Diamond (C)
mineral
Concrete rubble
Anthropogenic conglomerate
sedimentary
Fossil gastropod shell
Fossilized marine gastropod; exact genus/species requires locality and examination
fossil