Rock Identifier

Category

Synthetic Polymer (Synthetic Material)

Browse synthetic polymer (synthetic material) specimens identified by the Rock Identifier community.

Coquina or Fossiliferous Limestone (Biogenic Limestone (Calcite/Aragonite CaCO3)) — sedimentary

Coquina or Fossiliferous Limestone

Biogenic Limestone (Calcite/Aragonite CaCO3)

Sandstone (Flagstone) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Flagstone)

Arenite (composed primarily of SiO2)

Pumice (Pumice (a highly vesicular volcanic rock)) — igneous

Pumice

Pumice (a highly vesicular volcanic rock)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Chert (specifically Gray Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Gray Chert)

Silicon Dioxide (SiO2)

Quartz (specifically Clear and Rose Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Clear and Rose Quartz)

Silicon Dioxide (SiO2)

Crushed Stone (Likely Granite or Diabase) (Intrusive Igneous Rock (Granitoid/Gabbroid)) — igneous

Crushed Stone (Likely Granite or Diabase)

Intrusive Igneous Rock (Granitoid/Gabbroid)

Granite (Weathered) (Course-grained Intrusive Igneous Rock) — igneous

Granite (Weathered)

Course-grained Intrusive Igneous Rock

Chert (Pebble) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Pebble)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (Pink/Red variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Pink/Red variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Turquoise, Pearl, and Coral Necklace (CuAl6(PO4)4(OH)8·4H2O (Turquoise) / CaCO3 (Pearl and Coral)) — mineral

Turquoise, Pearl, and Coral Necklace

CuAl6(PO4)4(OH)8·4H2O (Turquoise) / CaCO3 (Pearl and Coral)

Sugilite (Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)) — mineral

Sugilite

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)

Chert (specifically Yellow/Common Opal or Jasper mixture) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Yellow/Common Opal or Jasper mixture)

Silicon Dioxide (SiO2)

Amber (Succinates (Organic compound: C10H16O)) — mineraloid

Amber

Succinates (Organic compound: C10H16O)

Banded Chert (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Cryptocrystalline Quartz (SiO2)

Chert (often called Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint)

Microcrystalline Quartz (SiO2)

Chert (Flint/Jasper variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint/Jasper variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Green variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Green variety)

Silicon Dioxide (SiO2)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Fossilized Megalodon Tooth Fragment (Otodus megalodon (Carcharocles megalodon fossil)) — sedimentary

Fossilized Megalodon Tooth Fragment

Otodus megalodon (Carcharocles megalodon fossil)

Peridotite (Pyroxenite/Serpentinized Dunite) (Ultramafic Rock (consisting primarily of Olivine and Pyroxene)) — igneous

Peridotite (Pyroxenite/Serpentinized Dunite)

Ultramafic Rock (consisting primarily of Olivine and Pyroxene)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony

Cryptocrystalline Quartz (SiO2)

Chert (Yellow Jasper variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper variant)

Microcrystalline Quartz (SiO2)

Chert / Flint (Chert (varietal name for microcrystalline quartz). Chemical formula: SiO₂) — Mineral

Chert / Flint

Chert (varietal name for microcrystalline quartz). Chemical formula: SiO₂

Amber (Succinite (C10H16O)) — Organic Mineraloid

Amber

Succinite (C10H16O)

Organic Mineraloid

Chert (with Quartz vein/coating) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Quartz vein/coating)

Microcrystalline Quartz (SiO2)

Chert / Flint Nodules (Chert (Cryptocrystalline variety of Quartz, SiO2)) — sedimentary

Chert / Flint Nodules

Chert (Cryptocrystalline variety of Quartz, SiO2)

Chert (Nodule) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline Quartz (SiO2)

Chert with Iron Staining (Microcrystalline Quartz (SiO2)) — sedimentary

Chert with Iron Staining

Microcrystalline Quartz (SiO2)

Chert (specifically a Chert Nodule or Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically a Chert Nodule or Flint)

Cryptocrystalline Quartz (SiO2)

Chert / Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Chert / Jasper

Microcrystalline Quartz (SiO2)

Limonite (Iron-rich Siltstone / Sandstone base) (Hydrous ferric oxide mixture (FeO(OH)·nH2O)) — sedimentary

Limonite (Iron-rich Siltstone / Sandstone base)

Hydrous ferric oxide mixture (FeO(OH)·nH2O)

Fossilized Shark Tooth (Scapanorhynchus (Sand Tiger Shark relative)) — sedimentary

Fossilized Shark Tooth

Scapanorhynchus (Sand Tiger Shark relative)

Peridotite (with Olivine and Pyroxene) (Ultramafic Magmatic Rock (Primary minerals: (Mg, Fe)2SiO4 and (Ca, Mg, Fe)2Si2O6)) — igneous

Peridotite (with Olivine and Pyroxene)

Ultramafic Magmatic Rock (Primary minerals: (Mg, Fe)2SiO4 and (Ca, Mg, Fe)2Si2O6)

Jasper (Petrified Wood Variety) (Silicon Dioxide (SiO2)) — sedimentary

Jasper (Petrified Wood Variety)

Silicon Dioxide (SiO2)

Limonite (Ironstone) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Ironstone)

Limonite (FeO(OH)·nH2O)

Chalcedony (Agate/Chert) (Microcrystalline Quartz (SiO2)) — sedimentary

Chalcedony (Agate/Chert)

Microcrystalline Quartz (SiO2)

Banded Calcite (often commercially sold as 'Mexican Onyx' or 'Honey Onyx') (Calcite (Calcium Carbonate, CaCO3)) — sedimentary

Banded Calcite (often commercially sold as 'Mexican Onyx' or 'Honey Onyx')

Calcite (Calcium Carbonate, CaCO3)

Red Jasper (possibly Petrified Wood) (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary (secondary formation)

Red Jasper (possibly Petrified Wood)

Silicon Dioxide (SiO2) with Hematite inclusions

sedimentary (secondary formation)

Yellow Jasper (Chert) (Silicon Dioxide (SiO2) with iron inclusions) — sedimentary

Yellow Jasper (Chert)

Silicon Dioxide (SiO2) with iron inclusions

Chert (Jasper/Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Chalcedony)

Microcrystalline Quartz (SiO2)