Description
Santa Fe Pacific Minerals
Commodities
PrimaryGold
SecondarySilver
TertiaryArsenic, Antimony, Mercury, Copper
Commodity typeM
Deposit
Deposit typesediment-hosted gold
Model75: Distal disseminated Ag-Au
Deposit sizeM
Orebody formtabular to irregular
Ore controlThe Power Line Fault is the principal ore host and is equivalent to the NW-1 structure identified at the Stonehouse Deposit to the south. Gold mineralization at Lone Tree occurs in all three units (Valmy Formation, Antler Sequence, Havallah Sequence) and is largely confined to a N-S trending zone of intense fracturing and faulting known as the Wayne Zone. The Wayne Zone dips steeply to the west and has been traced for nearly a mile along strike on the Lone Tree property. Major cross structures offset and pinch the Wayne Zone at the northern and southern ends of Lone Tree Hill.
Materials
Ore mineralsGold, Arsenopyrite, Pyrite
GangueChalcopyrite, Marcasite
Geology
Host rockQuartzite,Conglomerate,Sandstone,Siltstone,Chert,Basalt,Porphyry · "Valmy Formation", "Antler Sequence", "Havallah Sequence"
Associated rockPorphyry
AlterationDominant alteration types affecting the host rocks are silicification, argillization, and pyritization.
Economic & production
Development statusProducer
Production years1991 - present (2005)
First production1991
Last production2005
Discovery year1989
Identification
Deposit ID10310324
MRDS IDRE00041
Alternate namesWayne Zone (Lone Tree), NW-1, East Zone, Southeast Area (Stonehouse)
RegionNA
Data scoreB
Coordinates40.83351, -117.21067
References
Braginton, B., 1992, Lone Tree Mine, abstract in April, 1992 Geological Society of Nevada Newsletter.NBMG Map 91, 3rd edition.Braginton, B., 1992, Lone Tree Mine, oral presentation at April 17, 1992 meeting of the Geological Society of Nevada.Mining Journal/Montagu Mining Finance, Mining Database, 8/10/91.American Mines 1996-2001NBMG, MI-1989-MI-2003Nevada Division of Minerals, 1994The Mining Record, Aug 4,1993McGibbon, D.H., 1992, The Stonehouse Gold Deposit, Humboldt County, Nevada, abstract in April, 1992 Geological Society of Nevada Newsletter.McGibbon, D.H., 1992, The Stonehouse Gold Deposit, Humboldt County, Nevada, Oral Presentation at April 17, 1992 meeting of the Geological Society of Nevada.NBMG, 1994, MI-1993Long, 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.