Mine detail: Almaden Mine

Lat / long:

44.24015, -116.71488

Host rock:	Payette Formation;Payette Formation;Payette Formation;Idaho Formation;Idaho Formation
Host type:	Sandstone
Associated rock:	Columbia River Basalt
Associated type:	Basalt
Structure:	Broad - Crested Parallel Anticlines. Deposit Located On The Crest Of A Long Anticline., Local Structural Depression, Partly The Result Of Faulting.
Tectonic:	Snake River Downwarp Or Syncline.
Alteration processes:	Argillic Alteration, Silicification , Opalitization

MRDS	M055162
DEP	10040402
Reference	{Deposit:: BAILEY, E.H., USGS, PERSONAL FILES.}{Deposit:: ANDERSON, A. L., 1941 , GEOLOGY OF ALMADEN MINE, IDAHO BUR MINES GEOLOGY PAMPH 55 , 9 P.}{Deposit:: BAILEY, E. H., 1964 , MINERAL RESOURCES - MERCURY: IDAHO BUR MINES GEOLOGY SPECIAL REPORT NO. 1 , P. 119 - 123}{Deposit:: REQUA, L. K., 1940 , IDAHO - ALMADEN MINE: NORTHWEST MINING NEWS, V. 6 , NO. 23 , P. 7 - 9 ; V. 6 , NO. 24 , P. 7 - 9 .}{Deposit:: 5) LICKES, M. R., 1957 , IDAHO - ALMADEN MERCURY MINE: USBM INF. CIRC. 7800 , 33 P.}{Deposit:: 6) CAMPBELL, A., 1939 , FORTY-FIRST ANNUAL REPORT OF THE MINING INDUSTRY OF IDAHO FOR THE YEAR 1939 , P. 303 - 307}{Deposit:: 7) SPOKANE CHRONICLE, FEB. 18 , 1972 ; DEC. 30 , 1970}{Deposit:: 8) ENG. MINING JOUR., MAR., 1967}{Deposit:: 1941 GEOLMAP ID. BUREAU OF MINES AND GEOL. PAMPHLET 55}{Deposit:: 1957 RECON U. S. BUREAU OF MINES INF. CIRC. 7800}{Deposit:: 1964 COMPILE ID. BUREAU OF MINES GEOL. SP. RPT. NO. 1}{Production:: BAILEY, E.H., USGS, PERSONAL FILES {{ ANDERSON, A. L., 1941 , IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 55 . {{ BAILEY, E. H., 1964 , IDAHO BUREAU OF MINES AND GEOLOGY SPEC. REPT. 1 {{ LICKES, M. R., 1957 , US BUR MINES INF. CIRC. 7800 {{ SPOKANE CHRONICLE, DEC. 30 , 1970 . ROSS, C. P., 1956 , USGS BULL. 1042-D}
Reporter	Bergquist, Joel R.