The Marysvale project, located in the historic Uranium Marysvale Mining District in south-central Utah, approximately 300 kilometres south of Salt Lake City -
Utah has been, and will again be a prolific producer of Uranium -
history often repeat itself -
The Utah state is very mining friendly and the mining cost structure is very low thereby allowing for profitable uranium mining -
From 1952 to 1966, 275,000 tons of ore from the Marysvale Mining District, were mined and milled to produce 1,100,000 pounds of Uranium of U3O8 -
The average grade of the uranium ore was 0.22% U3O8 (4.4 lbs/ton) -
The producing mines were located in the district’s “Central Mining Area” and included the Bullion, Monarch, and Prospector mines -
Exploration by Minex Uranium Company (“Minex”) and Phillips Uranium Company (“Phillips”) prior to 1982 on the Marysvale property reported an estimated 1.8 Million lbs uranium mineralization has been located -
Uranium was first discovered in the Marysvale area in 1949? -
From 1949 through 1966 the district recorded 1.4 million lbs. of U3O8 production, nearly all of which is from an area termed the Central Mining Area.
The average grade of the uranium ore was 0.22% U3O8 (4.4 lbs/ton) -
Some area was drilled in 1977 by Minerals Exploration Company (“Minex”), a subsidiary of Union Oil Company -
At least 24 holes were drilled some being core holes - Phillips Uranium Company acquired the property from Minex later in 1977 -
From 1978 through 1981, Phillips drilled 169 holes totaling 114,983 feet -
Most of the Phillips holes were vertical rotary or hammer drilled holes, with 5,141 feet of core included in the total footage -
Gamma logs from the drilling were prepared by Century Geophysical has the logs for 161 of the 169 holes -
Nearly all of these drill holes intersected uranium mineralization -
Phillips terminated their drilling program in April 1981 and abandoned the project in 1982 due to the severe decline in uranium prices -
Overall, Phillips spent approximately $1.5 million on the Marysvale project - (about fiat$5 mil. in today fiats) -
A report by Paul Dean Proctor, PhD., a professor of geology at Brigham Young University, in Provo, Utah - and an independent consultant, was prepared based on the Phillips and Minex drilling -
In his report Proctor states, “Blanket type supergene uranium ore reserves totaling at least 1.8 million lbs. U3O8 (.75 million tons of .075% U3O8 and 3.0 million tons of .03% U3O8) occur at the Marysvale project within 300-500 feet of the surface. Additional potential U3O8 ore exists on the Marysvale property which could double or triple the reserves of the district.”
Proctor characterizes the uranium mineralization as being derived from remobilization of primary deposits that formed where hydrothermal fluids rose along near-vertical faults -
Recommendations were made for follow up drilling - but were never carried out -