Surprise, Labrador, Bailey Day Mine Area

Lander County, Nevada, United States

GoldSilverCopperLeadIron

⌖ Show on map USGS source ↗

Commodities

PrimaryGold

SecondarySilver, Copper, Lead

TertiaryIron

Commodity typeM

Deposit

Deposit typevein associated with a fault zone

Model64: Skarn Au85: Polymetallic veins

Deposit sizeS

Orebody formtabular

Ore controlThere is strong structural and lithologic control of ore formation, being affected by WNW-trending high angle normal faults, the Surprise fault, and location of calcareous sediments.

Materials

Ore mineralsGold, Pyrite, Chalcopyrite, Chrysocolla, Malachite, Azurite, Tenorite, Limonite, Hematite

GangueChlorite, Quartz, Calcite, Epidote, Garnet, Diopside, Clay, Goethite

Geology

Host rockSandstone,Shale,Skarn (Tactite),Conglomerate,Hornfels · "Harmony Formation", "Battle Formation", "Antler Peak Limestone"

Associated rockConglomerate,Limestone,Porphyry,Granodiorite · "Battle Formation", "Antler Peak Limestone"

StructureNumerous regional scale thrust faults are present in the mine area, in particular along the contact between the Harmony and Battle Formations, The NNE-striking Copper King fault zone and the WNW-striking Surprise fault.

AlterationAlteration that has affected all rocks in the mine area are strong silicification, prograde garnet+diopside skarn that has been partially replaced by a retrograde assemblage of chlorite, quartz, calcite, and minor epidote.

Economic & production

Development statusPast Producer

Production years1937, 1938, 1941, 1945, 1947, 1954, 1987-1993

First production1934

Last production2004

Discovery year1934

Identification

Deposit ID10310304

MRDS IDM231296

Alternate namesAngela claim group, Bailey Day Claim Group

RegionNA

Data scoreA

Coordinates40.63129, -117.02872

References

Stewart, J. H., Mc Kee, E. H., and Stager, H. K., 1977, Geology and Mineral Deposits of Lander County, Nevada; NBMG Bull. 88Roberts, R. J. and Arnold, D. C., 1965, Ore Deposits of the Antler Peak Quadrangle, Humboldt and Lander Counties, Nevada: U.S.G.S. Prof. Paper 459-B.Schmidt, K. W., Wotruba, P. R., and Johnson, S. D., 1988, Gold-Copper Skarn and Related Mineralization at Copper Basin, Nevada, in Gold Deposits of North Central Nevada, Special Publication #8, the Geological Society of Nevada, Reno.Battle Mountain Gold Company, 1988, Annual Report for 1987.NBMG Mining District File 147, numerous press clippings.Bulk-Mineable Precious Metal Deposits and Prospects in Nevada, NBMG Map 91.NBMG, 1988, The Nevada Mineral Industry - 1987, NBMG Special Publication MI-1986-MI-1993.Buffa, R. and Schafer, R., eds., 1988, Fall Field Trip Guidebook, the Geological Society of Nevada, Reno, p. 271-276.USGS PP 459BDoebrich and Theodore, 1996Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Database of significant deposits of gold, silver, copper, lead, and zinc in the United States; Part A, Database description and analysis; part B, Digital database: U.S. Geological Survey Open-File Report 98-206, 33 p., one 3.5 inch diskette.Geological Society of Nevada, 1999, Geology and Gold Mineralization of the Buffalo Valley Area, Northwestern Battle Mountain Trend; GSN Special Publication No. 31, 1999 Fall field trip Guidebook.Wendt, Clancy, 2004, Technical Report on the? ICBM/COPPER BASIN Property, Lander and Humboldt Counties, Nevada, Staccato Gold website, : http://www.staccatogold.com/i/pdf/icbm-43-101.pdf