Onyx Marble Explained

Onyx Marble
Type:	Formation
Age:	Neogene
Region:	Arizona
Country:	United States

The Onyx Marble is a geologic formation in Arizona. It preserves fossils dating back to the Neogene period.

See also

• List of fossiliferous stratigraphic units in Arizona
• Paleontology in Arizona

References

• Web site: Fossilworks: Gateway to the Paleobiology Database. ((Various Contributors to the Paleobiology Database)). 17 December 2021.
• Onyx stone comprises different minerals, including quartz, feldspar, and agate.