Mine detail: Nighthawk Ridge Mine

Previously called 'Easy Junior'

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Location

Lat / long:

39.18104, -115.67422

Resource(B)

Primary:	Gold
Secondary:	Silver
Tertiary:	Mercury, Thallium, Antimony, Barium-Barite
Gangue:	Barite, Hematite, Limonite, Opal
Discovery year:	1986

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1989

Geology

Host rock:	Chainman Shale;Joana Limestone
Host type:	Shale,Limestone
Structure:	Low Amplitude, Open Folds With Axes That Strike Between N-S And N15e., Nighthawk Fault.
Alteration processes:	Silicification, Jasperization, Argillization, Decarbonization. Silicification Is The Most Common Alteration Within The Orebody. Chainman Shale And Pilot Shale Are Argillized And Silicified Adjacent To Nighthawk Fault.

References

MRDS	M242961
DEP	10047584
Reference	{Deposit:: CARDEN, J.R., 1991, THE DISCOVERY AND GEOLOGY OF THE NIGHTHAWK RIDGE DEPOSIT AT EASY JUNIOR, WHITE PINE COUNTY, NEVADA, IN GEOLOGY AND ORE DEPOSITS OF THE GREAT BASIN, RAINES, G.L., ET AL, EDS., THE GEOLOGICAL SOCIETY OF NEVADA, RENO, P. 665-676.}{Deposit:: NBMG, 1991, THE NEVADA MINERAL INDUSTRY 1990, NBMG SPECIAL PUBLICATION MI-1990, P.25.}
Reporter	La Pointe, D.D. (Tingley, J.V.), Phinisey, J. D. (Marcus, S.)