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F. L. Johnson

Publications and source records attributed to F. L. Johnson.

13 recordsLinked to original sources
USGS1985

Mines and prospects map of the Glacier Peak Roadless Area, Snohomish County, Washington

The Glacier Peak Roadless Area (fig. 1), covering 57,320 acres in the Cascade Range, is 50 mi northeast of Seattle, Wash. Over 4,000 claims have been located in or near the roadless area. One hundred ninety-six patented claims are in or within 1 mi of the area. Ore production from the roadless area is estimated to be about 280,000 tons, mainly gold-silver ore from seven mines in the Monte Cristo mining district. Of the 57,320 acres, about 2,100 acres are patented mining claims. The roadless area is bounded on the south and west by county roads and on the northeast by U.S. Forest Service roads. It is adjoined by the Glacier Peak Wilderness on the east.

Washington↗
USGS1984

Mineral resource potential maps of the Jerry Peak, Jerry Peak West, and Boulder Creek Wilderness Study Areas, Custer County, Idaho

The U.S. Geological Survey and the U.S. Bureau of Mines made a geological and mineral survey of the Jerry Peak, Jerry Peak West, and Boulder Creek Wilderness Study Areas, Custer County, Idaho, from 1980 through 1983. The area is underlain chiefly by lavas and pyroclastic rocks of the Eocene Challis Volcanics. Paleozoic sedimentary rocks are exposed along the east border of the Jerry Peak Wilderness Study Area and in two small areas farther west in the Jerry Peak and Jerry Peak West Wilderness Study Areas. All the rocks locally are intricately faulted. No veins or pervasive hydrothermal alteration are associated with these faults.

Idaho↗
USGS1982

Mineral resource potential map of the John Muir Wilderness, Fresno, Inyo, Madera, and Mono counties, California

Under the provisions of the Wilderness Act (Public Law 88-577, September 3, 1964) and the Joint Conference Report on Senate Bill 4, 88th Congress, the U.S. Geological Survey and the U.S. Bureau of Mines have been conducting mineral surveys of wilderness and primitive areas. Areas officially designated as "wilderness," "wild," or "canoe" when the act was passed were incorporated into the National Wilderness Preservation System, and some of them are presently being studied. The act provided that areas under consideration for wilderness designation should be studied for suitability for incorporation into the Wilderness System. The mineral surveys constitute one aspect of the suitability studies. The act directs that the results of such surveys are to be made available to the public and be submitted to the President and the Congress. This report discusses the results of a mineral survey of the John Muir Wilderness, Inyo and Sierra National Forests, Fresno, lnyo, Madera, and Mono Counties, California. The area was established as a wilderness by Public Law 88-577, September 3, 1964.

California↗