ELECTRUM
grains within dark gray bands of
NAUMANNITE
and white
QUARTZ
(Var: Chalcedony)
Knob Hill Mine (Golden Promise Mine), Klondike Mountain, Republic, Republic District, Ferry County, Washington, USA
Slabbed ore specimen is 14.7 x 8.7 x 2.6 cm (5-13/16 x 3-7/16 x 1 in)
Ralph Noyes Collection