Almaden Mine

Site Name

Primary: Almaden Mine
Secondary: Idaho-Almaden Mine
Secondary: Osa-Anna
Secondary: Nutmeg
Secondary: Main Mine
Secondary: Stinking Water Basin
Secondary: Cove Mine

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Commodity

Primary: Gold
Tertiary: Mercury

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Location

State: Idaho
County: Washington
District: Weiser

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Land Status

Not available

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Holdings

Type: Located Claim

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Workings

Type: Surface

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Ownership

Owner Name: Freegold Ventures Ltd.
Percent: 100.0
Home Office: 700 West Georgia Street Suite 1750 Vancouver BC V7Y 1B6 Canada
Info Year: 2008
Years: 2001 -

Owner Name: Rare Metals Corp.
Home Office: Salt Lake City, Ut.

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Production

Year: 1939
Material type: ORE
Description: Ap_Grade: ^9.36 Lb Hg/Ton Recovered
Year: 1940
Material type: ORE
Description: Ap_Grade: ^5.75 Lb Hg/Ton
Year: 1942
Material type: ORE
Description: Ap_Grade: ^4.45 Lb Hg/Ton
Year: 1941
Material type: ORE
Description: Ap_Grade: ^4.78 Lb Hg/Ton
Year: 1956
Material type: HG
Description: Ap_Grade: ^Recovered 3.4 Lb Hg/Ton Ore
Year: 1962
Time Period: To 1962
Material type: HG
Description: Cp_Grade: ^3 Lb/Ton

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Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Epithermal
Plant Type: Leach
Operation Type: Surface
Milling Method: Hydrometallurgy Unspecified
Year First Production: 1939
Discovery Year: 1936
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: Y
Deposit Size: M

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Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Payette Section
Physiographic Detail: Nutmeg Mountain

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Mineral Deposit Model

Not available

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Orebody

Form: BLANKET

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Structure

Type: R
Description: Broad - Crested Parallel Anticlines. Deposit Located On The Crest Of A Long Anticline.

Type: L
Description: Local Structural Depression, Partly The Result Of Faulting.

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Alterations

Alteration Type: L
Alteration Text: Argillic Alteration, Silicification , Opalitization

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Rocks

Name: Basalt
Role: Associated
Age Type: Associated Rock Unit
Age Young: Miocene

Name: Basalt
Role: Associated
Age Type: Associated Rock
Age Young: Miocene

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Analytical Data

Analytical Data: ORE RAN 6 LB HG PER TON. MOST ORE WAS COMPARATIVELY LOW GRADE. SELECTIVELY MINED TO YIELD 3 LB HG PER TON. ASSAYS SHOW TRACE OF GOLD. SOME ORE RAN 5 TO 15 LB HG/TON. SOME ORE HAS .01 TO .02 OZ AU/TON.

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Materials

Ore: Cinnabar
Gangue: Opal
Gangue: Pyrite
Gangue: Chalcedony

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Comments

Comment (Location): MINE LOCATED ON NUTMEG MOUNTAIN

Comment (Production): AS OF 1963, IDAHO-ALMADEN HAD PRODUCED NEARLY ONE-HALF TOTAL HG PRODUCTION IN IDAHO . EACH FLASK IN 6 ) ABOVE CONTAINED 76 LBS HG.

Comment (Development): 30 CLAIMS, 1 OF WHICH WAS PATENTED ; ECON.COM: ADEQUATE WATER SUPPLY NEARBY

Comment (Workings): ONE OPEN CUT 270 X 135 X 30. SEVERAL LG OPENCUTS WORKINGS AS OF CA. 1952. THERE IS A 200 FT. LONG QUARRY AND 17 SHALLOW SHAFTS.

Comment (Geology): TWO DIFFERENT FORMS OF OPAL, GRAY AND WHITE. CINNABAR ALTERS TO BLUE - BLACK WHEN EXPOSED. PAYETTE FORMATION - SANDSTONE, SHALE. IDAHO FORMATION - SANDSTONE, SANDY SHALE. ; GEOL.DESC: ORE IS IN ALTERED ROCK (OPALITE) EITHER DISSEMINATED OR AS COARSE GRAINS IN VEINS.

Comment (Deposit): NOTICE OF MINE TO CLOSE IN SPOK. CHRON. 2/18/72 ; INFO.SRC : BAILEY E H

Comment (Production): $25 MILLION PRODUCED IN AU, AG AND OTHER METALS.

Comment (Development): GETTY MINERAL RESOURCES CO., A SUBSIDIARY OF GETTY OIL CO. (75%) AND GOLD STANDARD INC., SALT LAKE CITY (25%) HAVE FILED APPLICATION FOR PERMITS ON MARCH 10, 1981. ; ECON.COM: SURFACE ENRICHMENT

Comment (Workings): FAULT SYSTEMS TRENDING NE, N-S, AND NW. CAVED. LAST OPERATED 1907

Comment (Geology): PALEOZOIC LIMESTONES AND SHALES INTRUDED BY RHYOLITE AND MONZONITE.

Comment (Deposit): NO HG PRODUCTION SINCE 1907, AU PRODUCTION HAS CONTINUED INTERMITTANTLY SINCE 1907. ; INFO.SRC : BAILEY E H

Comment (Commodity): AG CONC. HIGHEST ALONG FAULTS. HG MAY BE A GUIDE TO HIGH GRADE ORE.

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References

Reference (Deposit): 6) CAMPBELL, A., 1939 , FORTY-FIRST ANNUAL REPORT OF THE MINING INDUSTRY OF IDAHO FOR THE YEAR 1939 , P. 303 - 307

Reference (Deposit): 5) LICKES, M. R., 1957 , IDAHO - ALMADEN MERCURY MINE: USBM INF. CIRC. 7800 , 33 P.

Reference (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 .

Reference (Deposit): BAILEY, E. H., 1964 , MINERAL RESOURCES - MERCURY: IDAHO BUR MINES GEOLOGY SPECIAL REPORT NO. 1 , P. 119 - 123

Reference (Deposit): 7) SPOKANE CHRONICLE, FEB. 18 , 1972 ; DEC. 30 , 1970

Reference (Deposit): 8) ENG. MINING JOUR., MAR., 1967

Reference (Deposit): ANDERSON, A. L., 1941 , GEOLOGY OF ALMADEN MINE, IDAHO BUR MINES GEOLOGY PAMPH 55 , 9 P.

Reference (Deposit): BAILEY, E.H., USGS, PERSONAL FILES.

Reference (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

Reference (Deposit): 1964 COMPILE ID. BUREAU OF MINES GEOL. SP. RPT. NO. 1

Reference (Deposit): 1941 GEOLMAP ID. BUREAU OF MINES AND GEOL. PAMPHLET 55

Reference (Deposit): 1957 RECON U. S. BUREAU OF MINES INF. CIRC. 7800

Reference (Commodity): Tietz,Paul, Gustin,M.M., 2009, NI 43-101 Technical Report, Almaden Project, Washington County, Idaho, December 8, 2009, 154 pages

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Idaho Gold

"Where to Find Gold in Idaho" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Idaho. Read more: Where to Find Gold in Idaho.