Download or read book Mineral Resources of the Mill Creek Canyon Wilderness Study Area, Grand County, Utah written by S. Bartsch-Winkler and published by . This book was released on 1989 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: The San Rafael Swell wilderness study areas, including the Muddy Creek, Crack Canyon, San Rafael Reef, Mexican Mountain, and Sids Mountain Wilderness Study Areas, are in Emery County, south-central Utah. At least 4,100 current and historic mining claims have been located in or near the study areas, primarily for uranium. Vanadium is the most valuable byproduct of uranium mining, although minor copper, silver, lead, zinc, and gold also occur in some deposits.