Mine detail: Manhattan Gold Mine

Previously called 'Big Four MineReilly MineBig Pine MineLittle Grey MineEast PitWest Pit'

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Location

Lat / long:

38.53132, -117.0562

Resource(B)

Primary:	Silver, Gold
Tertiary:	Antimony, Arsenic, Fluorine-Fluorite
Ore:	Gold, Silver, Stibnite, Arsenopyrite, Realgar, Fluorite, Quartz, Adularia, Pyrite, Clay, Barite
Gangue:	Calcite
Orebody form:	Tabular to irregular
Discovery year:	1868

Production

Operation type:	Surface-Underground
Deposit type:	lode, replacement
Production size:	Small
Development status:	Past Producer
Production years:	1860s; 1905-1947; 1973-1993
First production started:	1868
Last production ended:	1993

Geology

Host rock:	Gold Hill Formation, White Caps Limestone
Host type:	Phyllite,Limestone
Associated rock:	Gold Hill Formation
Associated type:	Schist,Quartzite
Structure:	A series of thrust sheets that generally dip to the south have affected rocks in the mine area. The Manhattan gold deposit occurs within a NW-trending, NW-plunging faulted antiform., Reilly Fault (ENE), Jumping Jack Fault (NE), Twin Faults (ENE), Big Pine Fault (ENE), and joints associated with the Brugher Fault trend (NE), joints associated with the Little Grey Fault trend (NW), Little Grey Cross Fault (E-W) and joints associated with other unnamed fault trends, all cut through the mine area.
Tectonic:	Basin and Range province
Alteration processes:	Host rocks in the mine area are not strongly altered hydrothermally. Quartz/host rock contacts are sharply defined.

References

DEP	10310361
Reference	{Deposit:: Kral, V.E., 1951, Mineral Resources of Nye Co.: Nev. Bur. of Mines and Geol., Bull. 50, p. 125}{Deposit:: Ferguson, H.G., 1924, Geol. and ore deposits of the Manhattan District: USGS Bull 723, p. 151-153.}{Deposit:: NBMG, MI-1993-MI-2004.}{Deposit:: Shawe and others, 1986, Ages of igneous and hydrothermal events in the Round Mountain and Manhattan gold district, Nye County, Nevada, Econ. Geol., vol. 81, p. 388-407.}{Deposit:: Maddry and others, 1987, Geology of the Manhattan Gold deposit Nye County, Nevada, in Bulk Mineable Precious Metal Deposits of the Western US, GSN Symposium Proceedings.}{Deposit:: Long, 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.}
Reporter	LaPointe, D.D., Schruben, Paul G.