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Eagle Mountain Iron Mine (Eagle Mountain Iron deposit; Kaiser Steel Corp.), Monte Negro District (Eagle Mountain District), Eagle Mts, Riverside Co., California, USA

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A former open pit Fe mine located in secs. 34, 35 & 36, T3S, R14E, SBM, in the Eagle Mountains.

Mineralization is a replacement deposit hosted in limestone and quartzite.

This large open pit mine used to provide iron ore to Kaiser Steel Corporation's smelter in Fontana, California. The pit is currently (2009) owned by Kaiser Ventures, of Ontario, California, who had wanted to use it as a trash dump which had been planned to receive 20,000 tons per day of Los Angeles City garbage for the next 117 years. Because of numerous objections from environmentalists, who feared the site's impact on neighboring Joshua Tree National Park, which surrounds the pit on three sides at a distance of 2.5 km, and also objections from neighboring jojoba farmers, the trash disposal plans have been held up in court for years. On November 12th, 2009, the ban on the trash disposal plan was upheld by the Ninth U.S. Circuit Court of Appeals.

Local structures include an East-West-trending anticline, and NW-striking faults.

Production data are found in: Dubois and Brummett (1968): 1596. (1-4) World Mining Developments 1979-1980: 417.

Mineral List

16 entries listed. 10 valid minerals.

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Harder, Edmund Cecil (1912), Iron-ore deposits of the Eagle Mountains, California: USGS Bulletin 503: 28, 54, 63.

Hadley, Jarvis Bardwell (1948), Iron-ore deposits in the eastern part of the Eagle Mountains, Riverside County, California: California Division Mines Bulletin 129: 4.

Powell, Kenneth B. (1953), How Eagle Mountain helps Kaiser supply growing steel needs: Mining Engineer: 5: 481.

Gay, T.E. (1957) Iron industries in California. California Division Mines Bulletin 176: 247.

Dubois, R.L. and R.W. Brummett (1968) Geology of the Eagle Mountain area. In Ore Deposits of the United States, 1933-1962. The Graton-Sales volume, New York. A.I.M.E.: 1596-1606.

Engineering and Mining Journal International Directory of Mining and Mineral Processing Operations (1978), New York: McGraw Hill Mining Information Services: 168.

Engineering and Mining Journal Operating Handbook of Surface Mining, Vol. 2 (1978), New York: McGraw-Hill Inc.: 314.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 60, 216, 247, 251, 328, 344, 387.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 72, 150, 161, 163, 367, 476.

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