Hanover Mountain Mine

Site Name

Primary: Hanover Mountain Mine
Secondary: Hanover Mine Includes Gilchrist Tunnel
Secondary: Hanover Tunnel
Secondary: And Part of Hanover Shaft.
Secondary: Cobre
Secondary: Chino
Secondary: Continental Mine
Secondary: Union

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Commodity

Primary: Copper
Primary: Iron
Secondary: Gold
Secondary: Silver
Secondary: Lead
Secondary: Zinc

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Location

State: New Mexico
County: Grant
District: Central District (Fierro-Hanover District)

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Land Status

Land ownership: National Forest
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

Type: Patented

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Workings

Not available

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Ownership

Owner Name: Freeport-McMoran Copper and Gold Inc.
Percent: 100.0
Home Office: Phoenix, AZ
Info Year: 2009
Years: 2004 -

Owner Name: Phelps Dodge
Percent: 100.0
Info Year: 2004

Owner Name: Sharon Steel Corp, Southwestern Division
Percent: 100.0
Home Office: Miami Beach, FL
Info Year: 1981

Owner Name: U.V. Industries
Home Office: UT
Info Year: 1979

Owner Name: Copper Queen Consolidated Mining Co. , U.S. Smelting, Refining And Mining Co., (194
Home Office: Salt Lake City, UT
Years: 1899 - 1950

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Production

Year: 1900
Time Period: 1858-1900
Material type: CU
Description: Cp_Grade: ^Up To 58% Cu Ore

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Deposit

Record Type: Deposit
Operation Category: Past Producer
Operation Type: Surface-Underground
Year First Production: 1841
Years of Production:
Organization:
Significant: Y
Deposit Size: M

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Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland

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Mineral Deposit Model

Model Name: Porphyry Cu

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Orebody

Name: Cobre
Form: Tabular, Massive

Not available

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Structure

Type: L
Description: Barringer Fault. Deposit Localized Near Intersection Of Ne-Trending Fault Zones With N- And S-Trending Fractures.

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Alterations

Alteration Type: L
Alteration: Silicification, Carbonate, Potassic, Propylitic

Alteration Type: L
Alteration Text: Granodiorite To Quartz Monzonite Dikes Extensively Altered To Sericite And Quartz. Sandstone And Hornfels Silicified.

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Rocks

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

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

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Paleocene

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Analytical Data

Analytical Data: Average Composition: 54.43% Fe 6.85% SiO2 0.67% Mn 1.22% CaO 10.94% MgO 0.64% S 0.504% Cu

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Materials

Ore: Sphalerite
Ore: Galena
Ore: Cubanite
Ore: Chalcopyrite
Ore: Magnetite
Ore: Marmatite
Ore: Molybdenite
Ore: Chalcocite
Ore: Hematite
Gangue: Magnesite
Gangue: Serpentine
Gangue: Pyrite
Gangue: Sericite
Gangue: Quartz
Unknown: Montmorillonite
Unknown: Marialite
Unknown: Ilvaite
Unknown: Hedenbergite
Unknown: Epidote
Unknown: Chlorite
Unknown: Calcite
Unknown: Biotite
Unknown: Andradite
Unknown: Rhodochrosite

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Comments

Comment (Commodity): Base Metal Sulfides Are Gold And Silver Bearing. Some Of The Older Mines That Are Now A Part Of The Pit Like The Continental And The Anson S Were Mined For Magnetite.

Comment (Commodity): Supergene Minerals - Chalcocite. Primary Minerals - Cupriferous Pyrite

Comment (Reserve-Resource): Chalcocite Blanket; Deposit Is Open To West And South. Based On About 30,000 Ft Reverse Circulation Drilling.

Comment (Location): Located South Of Hanover Mountain. The Shaft Extends SW To The Continental Pit And They Are Connected. Geodetic Location Is For Approximate Center Of The Open Pit Area In The Southeast Quarter Of Section 9. Underground Workings And Continental Shafts Nos. 2 And 3 Are In The Northeast Quarter Of Section 9 And The Southeast Quarter Of Sec 4.A A107 6675 Ft

Comment (Other Database): Not A Duplicate Of Tc39333. They Are Next To One Another But Are Different Deposits (K.Bolm)

Comment (Production): Fe Production Is Included With That Of Union Hill And Republic Mines. Production In 1979 Was Approximately 3000 Tpd At 1.66% Cu. Total Production Estimate For Cu Is Probably Somewhat Low.

Comment (Workings): Extensive Underground Workings Being Replaced By Large Open-Pit

Comment (Deposit): Replacement Of Pennsylvanian Magdalena Group Limestone In The Footwall Of The Ne-Trending Barringer Fault Along The Northwest Side Of Fierro-Hanover Stock. Also Includes Vein And Supergene Deposits In Cretaceous Colorado Formation In Hanging Wall Of Fault Zone.

Comment (Deposit): Nine Patented Claims Mineral Survey Number 936 Covering 169.53 Acres.

Comment (Location): Accurate Location Is For The Union Hill Portal Shown On The Santa Rita Topographic Quadrangle.

Comment (Production): No Production Was Reported For The Years 1919 To 1923, 1936 And 1942. Production Includes Ore From The Cupola, Jim Fair, Continental, Anson S., Snowflake And Ironhead Mines

Comment (Workings): Workings Consist Of Numerous Open Pits And Cuts. Underground Development Is Extensive With The Principal Access Through The Union Hill Adit And The Republic Shaft

Comment (Geology): Associated Rocks: andesite dike, basalt dike, breccia, gabbro, granodiorite porphyry, quartz diorite porphyry, quartz monzonite porphyry, skarn, syenodiorite porphyry;n.d.;andesite breccia, conglomerate, dolomite, felsic volcanic rocks, granodiorite, hornfels, limestone, marble, quartz monzonite, quartzite, sandstone, shale, siltstone, skarn

Comment (Deposit): Deposit Consists Of A Zone Of Supergene-Enriched Copper Minerals In The Cretaceous Colorado Formation In The Hanging Wall Of The Barringer Fault At The Extreme North End Of The Fierro-Hanover Stock And Is Associated With Complex Vein, Disseminated, And Replacement Mineralization. Deposit Consists Of A Leached Cap, 20 To 200 (Average 80) Ft Thick With 100 To >400 (Averaging 290) Ft Thick With 0.38% Acid Leachable Cu. Primary Mineralization Below Chalcocite Blanket Contains 4 To 7 Vol. % Pyrite And 0.2 To 0.5 Wt % Cu.

Comment (Workings): Tunnels, Shaft, And Surface Workings

Comment (Development): Old Hanover Mine Opened 1841 By Hinckel For A Mexican Concern. Ore Smelted In An Adobe Furnace Destroyed Within A Year By Apaches. First Recorded Production Came From High Grade Vein And Replacement Deposits Between 1858 And 1910 From Hanover Shaft And Other Small Workings. Drilled 1993-1994 By Cobre Mining Co. Delineating Present Reserves. Supergene Enriched Ores Recognized As Early As 1899 When Explored By Copper Queen Consol. Mining Co. (Phelps Dodge).

Comment (Deposit): This Record Contains Data From Record D011690 By Ron Worl Which Has Been Deleted From Mrds. ; Info.Src : 1 Pub Lit; 2 Unpub Rept

Comment (Development): Mined For Iron From Extensive Underground Workings Prior To 1931. Between 1954 And 1968 Considerable Copper Ore Mined From Continental Mine And Leaching Operations In Zuniga Mine. In 1968 Open-Pit Mining Started.

Comment (Orebody): Type of Orebody #1 : REPLACEMENTShape of Orebody #1 : TABULARShape of Orebody #2 : IRREGULARPrimary mode of Origin : HYDROTHERMALPrimary Ore Control : IGNEOUSSecondary Ore Control : BEDDINGDegree of Wallrock Alter. : MODERATEType of Wallrock Alter. #1 : SERICITICType of Wallrock Alter. #2 : ADV ARGILLICType of Wallrock Alter. #3 : SILICIFICATIONMinimum Depth to Top : 50Avg. Thick. Unconsol. Mat. : 0Min. Thick. Unconsol. Mat. : 0Total Surface Area (HA) : 10Date of Last Modification : 810803

Comment (Workings): MAS Development Schedule #: 1Mining Record # : 1Status of Mining Method : PROPOSEDMining Method : STRIP-HILLSIDEPercent Waste Rock : 0Avg. Overburden Thickness : 0Hardness of Ore : M-HARD ROCKSCapacity : 169Capacity Units : MT ORE/DAYPreprod. Stripping Vol. : 0Unit Production Cost : 2.96Units of Production : $/MT OREOperating Days per Year : 301Operating Shifts per Day : 1Year of Information : 1981

Comment (Workings): 67 M Additional Information: MAS Development Schedule #: 1 Mining Record # : 1 Status of Mining Method : PROPOSED Mining Method : OPEN STOPE Percent Waste Rock : 0 Percent Recovery : 100 Hardness of Rock : HARDROCK WITH LITTLE WATER Rock Characteristics : NO PLANES OF WEAKNESS Rock Support Chars. : SUPPORTING Mine Support Chars. : UNKNOWN Number of Shafts : 1 Length of Inclines (m) : 274 Slope of Inclines : 15 Number of Inclines : 2 1st Condition of Workings : OPEN Capacity : 181 Capacity Units : MT ORE/DAY Unit Production Cost : 21.66 Units of Production : $/MT ORE Operating Days per Year : 301 Operating Shifts per Day : 2 Year of Information : 1981

Comment (Geology): Zinc Ore Bodies Are Replacement-Type In The Pyrometasomatic Zones. The Ore And Gangue Minerals Have Completely Replaced The Limestones (Lower Blue Limestone - A Member Of The Lake Valley Limestone And Oswaldo (Middle Blue) A Member Of The Pennsylvanian Magdelena Group). All Of The Remaining Ore Is In The Lake Valley Limestone. The Ore Is Adjacent To The Granodiorite Dikes And Seems To Con- Centrate Immediately Beneath The Parting Shale. The Dimensions Given Are For The Individual Ore Bodies (Or Pods) And Their Average Size.

Comment (Reserve-Resource): Reserves Given By Company In 1981 As Minable. Matrix 1 Reserve Is Surface Ore Undgrd Reserve Stated By Company (June 1981) As Minable Res. (Mat 2 Adjusted From Mineable Res. To Consider 5% Dilution Factor. In-Situ Res. Assumed To Be 100% Recoverable.)

Comment (Reserve-Resource): All Uv Holding Have Been Liquidated. Mueller Industries, Inc. Recently Sold The Property. Reserve Given In Adit Record Is Underground Reserve. Surface Reserve Given As 51,000 Mt @ 7.0% Zn.

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References

Reference (Deposit): Spencer, A. C., And Paige, Sidney, 1935, U.S. Geological Survey Bulletin 859, P. 5-6.

Reference (Deposit): Jones, F. A., 1904, New Mexico Mines And Minerals: Santa Fe, New Mexico Printing Company, P. 41.

Reference (Deposit): Harrer, C. M., And Kelly, F. J., 1963, U.S. Bureau Of Mines Information Circular 8190, 112 P.

Reference (Deposit): Kelly, V. C., 1949, New Mexico University Publications In Geology Series, No. 2, 246 P.

Reference (Deposit): Lindgren, Waldemar, Graton, L. C., And Gordon, C. H., 1910, U.S. Geological Survey Professional Paper 68, P. 306.

Reference (Deposit): Nm Bur. Immigration, 1901, P. 96.

Reference (Deposit): Schmitt, H. A., 1935, American Institute Of Mining And Metallurgical Engineers Transactions, V. 115, P. 198-199.

Reference (Deposit): Hillesland, L.L., Et Al, 1994, General Geology Of The Continental Mine, Grant County, Nm: Cobre Mining Co., Unpublished Report, 22 P.

Reference (Reserve-Resource): Richter, D. H., And Lawrence, V. A., 1983, Mineral Deposit Map Of The Silver City Quadrangle, I-1310-B.

Reference (Deposit): Richter, D.H., and Lawrence, V.A., 1983, Mineral deposit map of the Silver City 1o x 2o quadrangle, New Mexico and Arizona: U.S. Geological Survey Miscellaneous Investigation Series, Map I-1310-B, 70 p. and 1 sheet

Reference (Deposit): North, R.M., and McLemore, V.T., 1988, A classification of the precious metal deposits of New Mexico, in Schafer, R.W., Cooper, J.J., and Vikre, P.G., eds., Bulk mineable precious metal deposits of the western United States: Reno, Nevada Geological Society

Reference (Geology): Central Mining District, Grant County, New Mexico. In Ore Deposits Of The United States, 1933-1967 (Aime Graton-Sales) V. 2, 1968, Pp. 1212-1237.

Reference (Geology): Lasky, S. G. And Hoagland, A. D. Central Mining District, New Mexico, In Symposium On The Geology, Paragenesis, And Reserves Of The Ores Of Lead And Zinc, 18th Int. Geol.Cong., London, 1948, Pp. 97-110.

Reference (Deposit): Einaudi, M.T., 1982, Description of skarns associated with porphyry copper plutons, in Titley, S.R., ed., Advances in geology of the porphyry copper deposits, southwestern North America: Tucson, University of Arizona Press, p. 139-183.

Reference (Deposit): Hernon, R. M., Jones, W. R., And Moore, S. L., 1964 USGS Geologic Map, Gq-306

Reference (Reserve-Resource): U.S. Bureau Of Mines, Mas, U.S. Bureau Of Mines Computer Data Bank, 1979.

Reference (Production): U.V. Industries Annual Report, 1974, P. 4.

Reference (Deposit): Richter and Lawrence, 1983; USBM Production Data

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