Iron Mountain Titaniferous Magnetite

Site Name

Primary: Iron Mountain Titaniferous Magnetite
Secondary: Iron Mountain Titanif. Magnetite
Secondary: Iron Mountain Area
Secondary: Iron Mountain

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Commodity

Primary: Iron
Secondary: Titanium
Tertiary: Chromium
Tertiary: Vanadium
Tertiary: Zirconium

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Location

State: Wyoming
County: Albany
District: Laramie Range District

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Land Status

Land ownership: Mixed
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: Private Lease
Type: Located Claim
Type: Other

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Workings

Type: Surface

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Ownership

Owner Name: Rocky Mountain Energy Co (64%), Anaconda (35%), Local Rangers (1%)

Owner Name: Union Pacific Railroad
Home Office: Nebraska
Info Year: 1976

Owner Name: Anaconda Co.
Home Office: New York
Info Year: 1976

Owner Name: Wyomex Res, Inc.
Percent: 100.0
Home Office: P. O Box 185, Cheyenne, Wy 82003
Info Year: 1993

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Production

Not available

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Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Surface
Mining Method: Open Pit
Milling Method: Magnetic
Year First Production: 1897
Discovery Year: 1850
Years of Production:
Organization:
Significant: Y

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Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

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Mineral Deposit Model

Not available

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Orebody

Name: ? (from 10080932 =W0324730
Form: IRREGULAR

Name: ? (from 10205264 =0560010036)
Form: massive, magmatic differ.,

Not available

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Structure

Not available

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Alterations

Not available

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Rocks

Not available

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Analytical Data

Analytical Data: AL2O3 = 8.12%, FE2O3 = 26.26%, FEO = 41.80%, MGO = 3.62%, TIO2 = 19.30%, MNO = 0.09 [from 10080932 = W032473, reference is Bull. 50, p. 106]

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Materials

Ore: Magnetite
Ore: Ilmenite
Gangue: Hypersthene
Gangue: Feldspar
Gangue: Spinel
Gangue: Olivine
Gangue: Biotite
Gangue: Plagioclase
Unknown: Limonite
Unknown: Fayalite
Unknown: Forsterite

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Comments

Comment (Reserve-Resource): INCLUDES A PROPOSED SLAG SMELTER.

Comment (Production): THE PROPERTY HAS BEEN MINED IN THE RECENT PAST FOR AGGREGATE AND A FEW TONS WERE MINED IN 1897 AND 1898 FOR SMELTING ATTEMPTS BY THE COLORADO FUEL AND IRON CORP. SERIOUS DEVELOPMENT OF THE PROPERTY FOR THE COMMODITIES IN THIS EVALUATION HAS NOT OCCURRED.

Comment (Geology): THE OREBODIES OCCUR AS NUMEROUS DIKES, OFTEN LENTICULAR IN SHAPE. THE MINERALIZED PART OF THE MAIN IRON MOUNTAIN AREA CONSISTS OF DISCONTINUOUS, OVERLAPPING, LENTICULAR BODIES OF MASSIVE MAGNETITE-ILMENITE AND IRREGULAR BODIES OF DISSEMINATED MAGNETITE-ILMENITE EXTENDING ALONG THE CREST OF THE MOUNTAIN FOR 2134 METERS. SINCE THE ORE OCCURS AS NUMEROUS SMALL BODIES, ALL DIMENSIONS CANNOT BE GIVEN. THE DIMENSIONS SHOWN IN THE G-SET ARE THOSE OF THE LARGEST OREBODY. STRIKE IS GENERALLY NE. SINCE THERE ARE A NUMBER OF MAGMATIC OREBODIES CONTAINED IN A PRIMARY MAGMATIC INTRUSIVE, DIP VARIES FROM HORIZONTAL TO VERTICAL.

Comment (Ownership): WYOMEX RESOURCES, INC OWNS LEASES OF IRON MT. (PHONE CONVERSATION WITH JOHN P. SIMONS, PRESIDENT, 303-635-9397, 2/93)

Comment (Reserve-Resource): THE ABOVE RESERVES WERE OBTAINED DIRECTLY FROM THE MINERAL HOLDERS, ANACONDA AND ROCKY MOUNTAIN ENERGY, AND WERE USED FOR THIS EVALUATION. APPROXIMATELY 72% OF THE ABOVE RESERVES ARE CONSIDERED RECOVERABLE.

Comment (Reserve-Resource): THE RESERVE SHOWN IN R COL 1 IS MASSIVE ORE (HIGHER GRADE) WHILE R COL 3 IS DISSEMINATED ORE (LOWER GRADE).

Comment (Production): PROPOSED RECOVERIES ARE 71.66% FOR FE AND 73.98% FOR TIO2. THEY HAVE BEEN ROUNDED IN THE Y-DATA SET.

Comment (Reserve-Resource): RE-REC 030-GRID AREA 1,SEC.13,14,T18N,R71W.-GRID AREAS 3,4,S 8N,R71W.-GRID AREA 5,SEC.5,T18N,R71W.-GRID AREA 7,SEC. ,R71W.-GRID AREA 75,SEC.4,T 18N,R71W.-GRID AREA 8,T19N,R71W.-GRID AREA 14,SEC.4,T1 RESERVE FIGURES ARE CUMULATIVE FOR ALL 9 GRID AREAS AS ESTIM THE U.S.B.M. (10 TO 50% PROB. FIGURES BASED ON 50% ADDITIONAL RESERVES INFERRED AT DEPTH) [copied from deleted record 10205264 = 0560010036, probably from USBM IC-8037]

Comment (Deposit): 2.45% CR203 IN IRON MTN. TITANIFEROUS MAGNETITE DEPOSIT (Bull. 50, p. 25)[copied from deleted record 10205264 = 0560010036, and 10132702 = 0560010148]

Comment (Deposit): GRADE 1-MASSIVE MAGNETITE-ILMENITE WITH 0-35% BY VOLUME OF SILICATES, CHIEFLY OLIVINE AND MINOR SPINEL. TIO2% RANGES FROM 16-23% INCLUSIVE. GRADE 2-MAGNETITE-ILMENITE WITH 35-65% BY VOLUME OF SILICATES, CHIEFLY OLIVINE AND MINOR SPINEL, PLAGIOCLASE, AND HYPERSTHENE. TIO2 RANGES FROM 10-16%. THIS GRADE ORE RARELY CROPS OUT. GRADE 3-MAGNETITE-ILMENITE WITH 65-85% BY VOLUME OF SILICATES, LARGELY PLAGIOCLASE WITH MINOR OLIVINE AND HYPERSTHENE. TIO2 RANGES FROM 5-10% [copied from Bull. 50, p. 106]

Comment (Production): SMALL PRODUCTION (EXTENSIVE EXPLORATION BY USBM AND U.P.R.R. SOME MINING IN 1950'S AND 1960'S FOR TESTS AND HEAVY AGGREGATE.

Comment (Geology): TYPICAL WEATHERING OF THE GRANITE; CSTR + ZRCN + PCLR + CLMB + TNTL + XNTM; MAIN ORE BODY AT MADEIRA IS 2KM IN DIAMETER, HAS A WEATHERED ZONE 40M DEEP WHICH CONTAINS 300,000T SN, 300,000T NB205 AND 30,000 TA205, AS WELL AS HAFNIUM, YTTRIUM, AND ZIRCONIUM.1.8GA GRANITES IN 1.96A RHYOLITE ASHFLOWS, GRANITES FOLLOWED BY SANDSTONE AND SHALES. AT ABOUT THE SAME TIME, A SERIES OF GRANITES RANGING FROM RAPAKIVI THROUGH PORPHYRITIC GRANITES TO SUBALKALINE BIOTITE GRANITE. GREISENISATION OF BIOTITE GRANITE PRODUCED OREBODY. ORE MINERALS INCLUDE ZIRCON, PYROCHLORE, COLUMBITE, TANTALITE, XENOTIME, CASSITERITE. [copied from 10024852 = ISM0604].

Comment (Production): 1,080,000 MT ORE PER ANNUM (ESTIMATED) IF PRODUCING (1982) NO SIGNIFICANT COMMERCIAL PRODUCTION OF FE OR TI. NO V PRODUCTION. [copied from 10024852 = ISM0604].

Comment (Production): Deleted record 10205264 (MAS 0560010036) claims that first production was in 1961.

Comment (Reserve-Resource): (105,000 IN MASSIVE ORE, 145,000 IN DISSEMINATED ORE) [copied from 1008228 = D00223]

Comment (Development): NON-GEOLOGIC CONSTRAINTS ON DEVELOPMENT OR EXPANSION IN 1-5 YRS. ( PROCESSING; X; HIGH COST). DEVELOPMENT(NO); EXPLORATION(NO); ASSESSMENT(DEVELOPMENT WOULD PROBABLY BE BASED PRINCIPALLY ON DEMAND FOR TI (OR FE).); WOULD MOST LIKELY BE DEVELOPED USING THE QIT SLAG PROCESS TO RECOVER A TITANIUM SLAG, A PIG IRON AND POSSIBLY THE VANADIUM [copied from 10024852 = ISM0604]

Comment (General): THIS RECORD WAS COMPILED FOR THE INTERNATIONAL STRATEGIC MINERALS INVENTORY. THE DATA WERE USED IN PREPARATION OF THE USGS CIRCULAR 930 SERIES OF REPORTS. MINERAL RESOURCE CATEGORIES AND CODES HEREIN ARE FROM THE INTERNATIONAL CLASSIFICATION SYSTEM RECOMMENDED BY THE UNITED NATIONS GROUP OF EXPERTS ON DEFINITIONS AND TERMINOLOGY FOR MINERAL RESOURCES. (SEE NATIONAL RESOURCES FORUM, V. 4, NO. 3, P. 307-313.). OPEN-CUT CHEMICALS AND METALS DATE OF ORIGINAL: 10-APR-89; DATE OF LAST CHANGE: 05-MAY-89 [copied from 10024852 = ISM0604]

Comment (Geology): FOLDING, FAULTING AND METAMORPHISM; PREC; VANADIFEROUS MGNT + ILMN + SPNL +- OLVN + APTT + BOTT + FLDP + FRSR; MAGNETITE-ILMENITE OCCUR IN NUMEROUS DIKE-LIKE BODIES. THE MINERALIZED PART OF THE MAIN IRON MOUNTAIN ALSO INCLUDES DISCONTINUOUS OVERLAPPING LENTICULAR BODIES OF MASSIVE MAGNETITE-ILMENITE AND IRREGULAR BODIES OF DISSEMINATED MAGNETITE-ILMENITE. [copied from 10024852 = ISM0604].

Comment (Production): NO ZRCN HAS OR IS BEING PRODUCED. NO ZRCN HAS BEEN PRODUCED. [copied from 10024852 = ISM0604].

Comment (Reserve-Resource): UNOFFICIAL ESTIMATES ARE SEVERAL TIMES LARGER. [copied from 10024852 = ISM0604].

Comment (Location): Located in Sec. 22, 23, 26, 27, T19N, R71W.

Comment (Geology): GEOL.DESC: FINELY INTERGROWN ILMENITE AND MAGNETITE IN MASSIVE AND DISSEMINATED BODIES IN ANORTHOSITE, WHICH HAS BEEN INTRUDED BY LATER GRANITE; ALSO FAULTED. [copied from 1008228 = D00223]

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References

Reference (Deposit): PINNEL, D.B. AND MARSH, J.A., 1954, SUMMARY GEOLOGICAL REPORT OF THE TITANIFEROUS IRON DEPOSITS OF THE LARAMIE RANGE: WY MINES MAG. V. 44, NO. 5, 30 P.

Reference (Deposit): GOLDBERG, S.A., 1984, GEOCHEMICAL RELATIONSHIP BETWEEN ANORTHOSITE AND ASSOCIATED IRON-RICH ROCKS, LARAMIE RANGE, WYOMING: CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, V. 87, P. 376-387.

Reference (General): Newhouse, W.H., and Hagner, A.F., 1957, Geologic map of anorthosite areas, southern part of laramie Range, Wyoming: USGS MF-119, scale 1:63,360.

Reference (Deposit): Harrer, C.M., 1966, Wyoming iron-ore deposits: USBM IC-8315, p. 14-15.

Reference (Deposit): Pinnel, D.E., and Marsh, J.A., 1954, Summary geological report on the titaniferous iron deposts of the Laramie Range, Albany County, Wyoming: Presented at the Colo. Mining Assoc. meeting, Jan. 30, 1954, 10 p.

Reference (Deposit): Diemer, R.A., 1941, Titaniferous magnetite deposits of the Laramie Range, Wyoming: Geological Survey of Wyoming Bulletin 31, 23 p.

Reference (Production): KOPPERS COMPANY, INC. FEASIBILITY STUDY FOR PLANT TO PRODUCE TITANIUM DIOXIDE PIGMENT AND GRANULATED IRON, AUG. 31, 1964, P. III-1 TO III-6, V-6 THRU V-14, DIAGRAMS, VII-1 THRU VII-16.

Reference (Production): NAFZIGER, R.H., 1981, ELECTRIC-ARC FURNACE PROCESSING OF DOMESTIC TITANIFEROUS MATERIALS: U.S. BUREAU OF MINES RI-8511, P. 1-35.

Reference (Deposit): DOW, V.T. 1961, U.S. Magnetite and ilmenite resources, Iron Mountain area, Albany County, Wyoming: US BUREAU OF MINES IC-8037, 133 PP.

Reference (Reserve-Resource): NORMAN, J. OF ANACONDA CORP., PROVIDED INFORMATION TO EVALUATOR DURING PHONE CONVERSATION MARCH 9, 1982.

Reference (Reserve-Resource): MEYER, A. OF ROCKY MOUNTAIN ENERGY, PROVIDED INFORMATION TO EVALUATOR DURING MARCH 3, 1982 VISIT.

Reference (Production): ELGER, G. OF U.S. BUREAU OF MINES (AMRC), PROVIDED INFORMATION TO EVALUATOR DURING PHONE CONVERSATION ON MARCH 4, 1982.

Reference (Geology): DIEMER, R.A. TITANIFEROUS MAGNETITE DEPOSITS OF THE LARAMIE RANGE, WYOMING. UNIVERSITY OF WYOMING, JUNE, 1941, P. 1-11.

Reference (Deposit): Wilson, W.H., 1966, Mineral Resources of Wyoming: WGS Bull. 50, p. 105-106.

Reference (Geology): SALISBURY, R. FIELD VISIT TO IRON MOUNTAIN (FIELD NOTES), 1975, U.S. BUREAU OF MINES.

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