Description
Echo Bay Mines (David Emmons)
Commodities
PrimaryGold, Silver
TertiaryManganese, Arsenic, Mercury, Antimony, Lead, Zinc, Tin, Copper, Thallium
Commodity typeM
Deposit
Model75: Distal disseminated Ag-Au
Deposit sizeM
Ore controlFractures, Faults
Materials
Ore mineralsAcanthite, Electrum, Silver, Tennantite, Tetrahedrite
GangueCalcite, Cassiterite, Chalcocite, Chalcopyrite, Clay, Covellite, Digenite, Galena, Marcasite, Pyrite, Pyrrhotite, Sericite, Sphalerite, Stannite
Geology
Host rockQuartzite · Favret Formation;Panther Canyon Formation;Augusta Mountain Formation
Associated rockDiorite
StructureFaults
AlterationArgillization, Silification, Manganese Alteration. See Geology Comments.
Economic & production
Development statusProducer
Production years1988 - PRESENT (9/92)
First production1988
Discovery year1987
Identification
Deposit ID10085018
MRDS IDW700450
RegionNA
Data scoreA
Coordinates40.33629, -117.20233
References
EMMONS, D.L, 1989, THE COVE GOLD-SILVER DISCOVERY, LANDER COUNTY, NEVADA, ORAL PRESENTATION AT 118TH ANNUAL MEETING OF AIME, LAS VEGAS, MARCH 2.EMMONS, D.L., AND COYLE, R.D., 1988, ECHO BAY DETAILS EXPLORATION ACTIVITIES AT ITS COVE DEPOSIT IN NEVADA; MINING ENGINEERING,, AUGUST, 1988, P. 791-794.NBMG MINING DISTRICT FILE 157, ITEM 12, UNPUBLISHED REPORT BY ECHO BAY MINES, AND NUMEROUS PRESS CLIPPINGS.BONHAM, H.F., 1988, NBMG MAP 91 AND IN NBMG MI-1987.ENGINEERING AND MINING JOURNAL, JUNE, 1988, P. 43.NBMG, 1994, MI-19931988 FIGURES: EMMONS, D.L., 1989, THE COVE GOLD-SILVER DISCOVERY, LANDER COUNTY, NEVADA, ORAL PRESENTATION AT 118TH ANNUAL MEETING OF AIME, LAS VEGAS, MARCH 2. NBMG MI-1993BONHAM, H.F., 1988 NBMG MI-1993