Mine detail: Borealis Mine

Previously called ''

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Location

Lat / long:

38.38325, -118.75957

Resource(M)

Primary:	Gold
Secondary:	Silver
Tertiary:	Zinc, Copper
Gangue:	Alunite, Barite, Hematite, Kaolinite, Montmorillonite, Pyrite, Quartz
Discovery year:	1935

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Producer

Geology

Host type:	Andesite
Structure:	Reg.Struct: Maj. Reg. Trends (Walker Lane Shear Zone; Borealis Trend)., Ne-Trending Faults With Subordinate W-S And E-W Striking Structures.
Alteration processes:	Pervasive Silicification, Alunitization, Kaolinization.

References

MRDS	M035782
DEP	10037638
Reference	{Deposit:: REID, R. F., JR., 1984, THE GEOLOGY OF THE BOREALIS DEPOSIT: GSA ABSTRACTS WITH PROGRAMS, 97TH ANN MTG, RENO, NV.}{Deposit:: NBMG MINING DISTRICT FILE 200, ITEMS 8, 9, PRESS CLIPPINGS.}{Deposit:: TOOKER, E.W., 19?, IN USGS BULL 1646.}{Deposit:: STRACHAN, D.G., 19?, GEOLOGIC DISCUSSION OF THE BOREALIS GOLD DEPOSIT, MINERAL CO., NEVADA, IN USGS BULL 1646.}{Deposit:: BULK-MINEABLE PRECIOUS METALS SYMPOSIUM, 1987, FIELD TRIP GUIDEBOOK.}{Deposit:: NBMG, 1994, MI-1993}{Production:: GSN SYMPOSIUM FIELD TRIP GUIDEBOOK, 1987. NBMG MI-1993}{Reserve-Resource:: PRESS CLIPPINGS, NBMG FILE 200.}
Reporter	Fiebelkorn, J. B. (Stewart, J. H.), La Pointe, D.D. (Tingley, J.V.), Mosier, Dan