Royal Reward Mine
Green River Gorge
Black Diamond
King County
Washington
(See also: Cardinal Reward Mine)
Calcite
Cinnebar
Metacinnebar
Quartz
Realgar
Sources:
Dillhoff, Richard M and Thomas A. Dillhoff (1991)
Realgar from the Royal reward Mine, King County, Washington
Rocks and Minerals Vol. 56 No. 4, p. 310-314
