Alpine Mine

Site Name

Primary: Alpine Mine
Secondary: Porvenir Mine
Secondary: O'Leary's and Lee's Claims
Secondary: NBMG Sample Site 2615

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Commodity

Primary: Tungsten
Tertiary: Manganese
Tertiary: Molybdenum

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Location

State: Nevada
County: Humboldt
District: Potosi District

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Land Status

Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

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Holdings

Not available

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Workings

Not available

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Ownership

Owner Name: Getchell Mine, Inc.

Owner Name: Getchell Mine Inc.; Mr. W. C. Rigg Of Winnemucca
Years: 1943 -

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Production

Year: 1943
Material type: ORE W
Description: Ap_Grade: ^Averaged About 0.5 % Wo3
Year: 1943
Time Period: 1943-Present
Material type: WO3
Description: Cp_Grade: ^About 0.5 % Wo3
Year: 1957
Time Period: 1943-1957
Material type: W
Description: Cp_Grade: ^About 0.5 % Wo3

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Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Contact Metamorphic
Operation Type: Unknown
Year First Production: 1943
Discovery Year: 1943
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

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Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Basin And Mountains

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Mineral Deposit Model

Model Name: W skarn

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Orebody

Form: IRREGULAR TABULAR LENSES

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Structure

Type: L
Description: Wnw-Trending Faults; Plunging Overturned Fold

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Alterations

Alteration Type: L
Alteration Text: Bleaching; Silication

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Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cambrian

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

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Analytical Data

Analytical Data: 0.4 TO 0.5% WO3 UP TO 1.0% WO3. SAMPLE 2615 OF COARSE-GRAINED GARNET SKARN WITH VERY FINE-GRAINED SCHEELITE, CLOTS AND PATCHES OF TREMOLITE, SOM-E QUARTZ AND CALCITE, CONTAINS 20 % FE, 1 % MG, 20 % CA, 0.7 %- TI, +5000 PPM MN, 50 PPM B, 20 PPM BA, 7 PPM CU, 150 PPM MO, -50 PPM SN, 200 PPM V, 300 PPM W.

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Materials

Ore: Scheelite
Gangue: Cordierite
Gangue: Epidote
Gangue: Calcite
Gangue: Tremolite
Gangue: Quartz
Gangue: Diopside
Gangue: Wollastonite
Gangue: Garnet

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Comments

Comment (Deposit): THE PROPERTY OPERATED IN 1943, WAS IDLE FROM 1945 TO 1950. GETCHELL BEGAN OPERATING HERE IN 1950, AND THE PROPERTY WAS IDLE AGAIN BY 1954. MOST PRODUCTION WAS FROM 2 PITS AT N. AND S. ENDS OF THE PROPERTY. RECENT EXPLORATION (UP TO 1978) HAS DEMONSTRATED LITTLE POTENTIAL HERE FOR ADDITIONAL MINEARAL OREBODIES. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV

Comment (Workings): 2 OPEN PITS ON WESTERN CONTACT, ADITS (CAVED) BELOW,SEVERAL CUTS AND A SHALLOW SHAFT.

Comment (Location): SW 1/4 SEC 6; HEAD OF SUMMER CAMP CREEK

Comment (Development): PROPERTY OPERATED FROM 1943 TO 1945, WAS IDLE FROM 1945-1950. GETCHELL BEGAN OPERATING IN 1950 UNITL 1954.

Comment (Deposit): GARNET-DIOPSIDE-WOLLASTONITE SKARN FORMED IN PREBLE LIMESTONE ON WESTERN SIDE OF NORTHERN LOBE OF OSGOOD GRANODIOR-ITE. LIMESTONE SECTION HERE IS ON W SIDE OF ANTICLINORIUM OF O-SGOOD MTS; SEDIMENTS DIP TO EAST WHILE CONTACT ZONE DIPS TO WE-ST. LARGE MASSES OF SILICATED ROCK OCCUR ALONG THE N-S STRIKIN-G CONTACT ZONE (EXPOSED ON WEST SIDE OF RANGE). IRREGULAR LENS-ES AND PODS OF GARNET TACTITE OCCUR WITHIN THE SILICATED ROCKS-. IN THE ALPINE PIT, TACTITE IS MAINLY COMPOSED OF EUHEDRAL MA-SSES OF DARK BROWN GARNET; SCHEELITE IS FINE-GRAINED AND VERY -SPARSE.

Comment (Geology): OREBODIES WERE TABULAR LENSES PARALLEL TO GRANODIORITE CONTACT FOR APPROX. 1300 FT., 3 TO 20 FT. THICK. THE SOUTH PIT TACTITE BODY OCCURS WHERE THE CONTACT MAKES A RIGHT-ANGLE BEND, FORMING A TROUGH. SEVERAL LENGTHS OF SCHEELITE-BEARING TACTITE OCCUR NORTH OF THE OLD ALPINE MINE AREA. LITTLE OR NO TACTITE OCCURS WHERE THE BEDDING PARALLELS THE CONTACT.

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References

Reference (Deposit): WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT COUNTY, NEV; NEV. BUREAU OF MINES BULL. 59.

Reference (Deposit): HOTZ, P.E., AND WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF THE OSGOOD MOUNTAINS QUADRANGLE HUMBOLDT CO, NEV: U.S.G.S. PROF. PAPER. 431

Reference (Deposit): HOBBS, S.W., AND CLABAUGH, S.E., 1946, TUNGSTEN DEPOSITS OF THE OSGOOD RANGE, HUMBOLDT COUNTY, NEV, UNIV. NEV. BULL. V. 40, NO. 5; GEOL & MIN. SER. NO. 44.

Reference (Deposit): TINGLEY, J.F., 1978, UNPUBLISHED REPORT ON GETCHELL PROJECT, ON FILE AT NEVADA BUREAU OF MINES.

Reference (Deposit): TINGLEY, J. V., 6 SEP 84, NBMG FIELD EXAMINATION ANDSAMPLE ANALYSIS.

Reference (Deposit): NBMG STAFF, 1985, NBMG OFR 85-3.

Reference (Deposit): STAGER, H. K., IN PREPARATION, NBMG BULLETIN ON TUNGSTEN IN NEVADA.

Reference (Deposit): NBMG DISTRICT FILE 136, ITEM 19- UNPUB USBM DATA ON ALPINE MINE.

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Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.