Commodities
PrimaryGold
SecondarySilver
TertiaryZinc, Copper
Commodity typeM
Deposit
Model104: Hot-spring Au-Ag
Deposit sizeM
WorkingsSurface/Underground
Ore controlNe-Trending Structures, Fracturing, Hot Springs ?; Intersection Of 3 Fault Systems.
Materials
GangueAlunite, Barite, Hematite, Kaolinite, Montmorillonite, Pyrite, Quartz
Geology
Host rockAndesite
StructureReg.Struct: Maj. Reg. Trends (Walker Lane Shear Zone; Borealis Trend)., Ne-Trending Faults With Subordinate W-S And E-W Striking Structures.
AlterationPervasive Silicification, Alunitization, Kaolinization.
Economic & production
Development statusProducer
Discovery year1935
Identification
Deposit ID10037638
MRDS IDM035782
RegionNA
Data scoreB
Coordinates38.38325, -118.75957
References
REID, R. F., JR., 1984, THE GEOLOGY OF THE BOREALIS DEPOSIT: GSA ABSTRACTS WITH PROGRAMS, 97TH ANN MTG, RENO, NV.NBMG MINING DISTRICT FILE 200, ITEMS 8, 9, PRESS CLIPPINGS.TOOKER, E.W., 19?, IN USGS BULL 1646.STRACHAN, D.G., 19?, GEOLOGIC DISCUSSION OF THE BOREALIS GOLD DEPOSIT, MINERAL CO., NEVADA, IN USGS BULL 1646.BULK-MINEABLE PRECIOUS METALS SYMPOSIUM, 1987, FIELD TRIP GUIDEBOOK.NBMG, 1994, MI-1993GSN SYMPOSIUM FIELD TRIP GUIDEBOOK, 1987. NBMG MI-1993PRESS CLIPPINGS, NBMG FILE 200.