Description and origin of uranium deposits in Shirley Basin, Wyoming

Melin, Robert E.

doi:10.2113/gsecongeo.59.5.835

Cited by 22 publications

(19 citation statements)

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“…Anomalously high concentrations of iron-disulfide minerals in roll-type uranium deposits result from an ore-stage generation of sulfide being superimposed on a pre-ore generation (Harshman, 1966(Harshman, , 1972(Harshman, , 1974Granger and Warren, 1969;Warren and Granger, 1973;Melin, 1969;Bailey, 1969;Dahl and Hagmeier, 1974). In fact, ore-stage marcasite has been recognized in the ore zones of roll-type deposits in Wyoming by Harshman, 1972;Bailey, 1969;Davis, 1969;and Melin, 1969.…”

Section: Marcasite Distribution In Roll-front Uranium Depositsmentioning

confidence: 99%

“…In fact, ore-stage marcasite has been recognized in the ore zones of roll-type deposits in Wyoming by Harshman, 1972;Bailey, 1969;Davis, 1969;and Melin, 1969. Detailed descriptions of the distribution of ore-stage marcasite are sparse, however, and petrographic distinction between ore-stage and pre-ore sulfide is generally lacking.…”

Section: Marcasite Distribution In Roll-front Uranium Depositsmentioning

confidence: 99%

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Origin of marcasite and its implications regarding the genesis of roll-front uranium deposits

Goldhaber¹,

Reynolds²

1979

Open-File Report

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Section: Marcasite Distribution In Roll-front Uranium Depositsmentioning

confidence: 99%

Section: Marcasite Distribution In Roll-front Uranium Depositsmentioning

confidence: 99%

Origin of marcasite and its implications regarding the genesis of roll-front uranium deposits

Goldhaber¹,

Reynolds²

1979

Open-File Report

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“…The ore deposits and their origin were discussed by Adler (1964), Bailey (1965), Harshman (1961Harshman ( , 1962Harshman ( , 1966Harshman ( , and 1968a, Melin (1964), and Rosholt, Harshman, Shields, and Garner (1964).…”

Section: Previous Workmentioning

confidence: 99%

“…The largest known deposits, which extend as much as 200 feet from the edge of the alteredsandstone tongues, are as much as 30 feet thick and extend a few hundred to as much as 2,500 feet laterally along the edges of the tongues (Melin, 1964, fig. 4).…”

Section: Character Of Alterationmentioning

confidence: 99%

“…Calcite, definitely older than uraninite, was described by Melin (1964) in the ore bodies at the Utah Construction and Mining Co. mine, and small calcite concretions, barren in their interior but enclosed in an altered rim by a skin 'of high-grade ore, have been noted near the outer edge of ore bodies in the Petrotomics Co. Section 9 pit.…”

Section: Mineralogy and Mineral Distributionmentioning

confidence: 99%

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Geology and uranium deposits, Shirley Basin area, Wyoming

Harshman¹

1972

Professional Paper

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Continental weathering as a possible origin of vein-type uranium deposits

Barbier¹

1974

Mineral. Deposita

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Geochemical and geochronological data presently available, concerning pitchblende vein-type deposits in France, seem altogether too contradictory for use in building a genetic model. Mostly hydrothermal hypotheses have however been suggested, although the previously mentioned idea of formation through continental weathering remains quite relevant; indeed, it may be noted that: a) Uraniferous areas are predominantly connected with granites where geochemical uranium, found as uraninite, can easily he leached through slight weathering, in the absence of any vegetation, along with Si, A1, Na and Ca. b) Apart from Na, these are elements essentially found in mineral deposits of pitchblende with a quartz, clay or calcite matrix, c) Such weathering conditions occurred during the Permian period, about 245 million years ago, at which time these mineralizations may have been laid (geochronology U-Pb); d) Veined pitchblende deposits show much analogy in their mineral associations and sequences to the uraniferous concentrations from superficial sources, as is the case with certain deposits in the United States, formed by the circulation of vadose waters. If such a model proves correct, this type of deposit would be contemporaneous with red-bed series whose presence could then become a valuable guide-line for regional-scale exploration.

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Description and origin of uranium deposits in Shirley Basin, Wyoming

Cited by 22 publications

References 0 publications

Origin of marcasite and its implications regarding the genesis of roll-front uranium deposits

Origin of marcasite and its implications regarding the genesis of roll-front uranium deposits

Geology and uranium deposits, Shirley Basin area, Wyoming

Continental weathering as a possible origin of vein-type uranium deposits

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