scholarly journals Control of Precambrian basement deformation zones on emplacement of the Laramide Boulder batholith and Butte mining district, Montana, United States

2011 ◽  
Author(s):  
Byron R. Berger ◽  
Thomas G. Hildenbrand ◽  
J. Michael O'Neill
Keyword(s):  
United States ◽  
Mining District ◽  
Precambrian Basement ◽  
Basement Deformation

Uranium and Vanadium Resources of Utah: An Update in the Era of Critical Minerals and Carbon Neutrality

2021 ◽  
Author(s):  
Stephanie E. Mills ◽  
Bear Jordan
Keyword(s):  
United States ◽  
Native Americans ◽  
Colorado Plateau ◽  
The United States ◽  
Mining District ◽  
Paradox Basin ◽  
Carbon Neutrality ◽  
Uranium Exploration ◽  
San Juan County ◽  
Critical Minerals

Utah is the second largest vanadium producing state and the third largest uranium producing state in the United States. Carnotite, a primary ore mineral for both vanadium and uranium, was first discovered and used by Native Americans as a source of pigment in the Colorado Plateau hysiographic province of eastern Utah. Radioactive deposits have been ommercially mined in Utah since about 1900, starting with radium, followed by vanadium, and thenuranium. In 1952, the discovery of the Mi Vida mine in Utah’s Lisbon Valley mining district in San Juan County kicked off a uranium exploration rush across the Colorado Plateau. As a result, the United States dominated the global uranium market from the early 1950s to late 1970s. In the modern mining era, Utah is an important contributor to the domestic uranium and vanadium markets with the only operating conventional uranium-vanadium mill in the country, multiple uranium-vanadium mines on standby, and active uranium-vanadium exploration. Overall, Utah has produced an estimated 122 million lbs U3O8 and 136 million lbs V2O5 since 1904. Most of this production has been from the sandstone-hosted deposits of the Paradox Basin, with minor production from volcanogenic deposits and as byproducts from other operations across the state

Controlling acid mine drainage from the Ficher Mining District, Oklahoma, United States

1982 ◽  
Vol 1 (1) ◽  
pp. 45-52 ◽  
Author(s):  
R. Bruce Sheibach ◽  
Roy E. Williams ◽  
Benjamin R. Genes
Keyword(s):  
United States ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Mining District ◽  
Acid Mine

Authigenic K-feldspar in the Precambrian basement of Ohio and its effect on tectonic discrimination of the granitic rocks

1991 ◽  
Vol 28 (10) ◽  
pp. 1624-1634 ◽  
Author(s):  
Edward G. Lidiak ◽  
Vincent M. Ceci
Keyword(s):  
United States ◽  
Major Element ◽  
The United States ◽  
Granitic Rocks ◽  
Precambrian Basement ◽  
Grenville Province ◽  
Element Abundances ◽  
Ordinary Light ◽  
Alkaline Earths ◽  
Optic Angle

Authigenic K-feldspar of apparent low-temperature origin is widespread in the uppermost part of the two main Precambrian basement terranes of Ohio: the subsurface extension of the Grenville Province of Canada, and the anorogenic granite–rhyolite terrane of the Transcontinental Proterozoic Province of the United States. The authigenic K-feldspar occurs mainly as a replacement of both primary K-feldspar and albitic plagioclase in a variety of igneous and metamorphic rocks and can be identified by a salmon color in plane or ordinary light, moderate to low optic angle, monoclinic or triclinic symmetry, and Or-rich composition. Its origin has been ascribed to alkali exchange by potassic brines in early Paleozoic time.The K-feldspar authigenesis has changed whole-rock major-elemental compositions by increasing K2O, decreasing Na2O and CaO, and in general modifying SiO2 and Al2O3. These changes rule out using chemical parameters such as alkalis, alkaline earths, alumina, and silica as tectonic or petrologic discriminators on rocks affected by K-feldspar authigenesis. Of the 53 granitoid and felsic extrusive rocks in the basement of Ohio that we analyzed for major-element compositions, only 19 are unaffected by the authigenesis. Among the unaltered granitoids, 13 have major-element abundances and ratios indicative of orogenic paragenesis, and at least three of the granitoids have apparent anorogenic chemical characteristics. All but one of the orogenic granitoids occur east of the Grenville Front and within the Grenville Province. Anorogenic granitoids occur on both sides of the front, and they are probably part of the broad belt of anorogenic igneous rocks that extend from the southwestern United States to Labrador.

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