Nickel (Ni):

Wyoming has no known commercial nickel deposits. Nickel in Wyoming typically occurs in small amounts associated with other metals. Concentrations up to 3,000 ppm occur along the north side of the Mullen Creek layered mafic complex in the Medicine Bow Mountains in association with silver, copper, lead, and zinc mineralization. Similar concentrations are associated with alteration zones in the Granite Mountains, and lesser amounts occur in some mafic dikes across the state. 

Nickel is addressed directly or indirectly in some WSGS publications including: 

• The Geology of Wyoming’s Precious Metal Lode and Placer Deposits

• Copper, Lead, Zinc, Molybdenum, and Associated Metal Deposits of Wyoming

• Rare Earth Elements in Wyoming

• A Comprehensive Report on Rare Earth Elements in Wyoming

Further investigation is required to fully understand nickel occurrences in Wyoming.