The Rössing Uranium Deposit: a product of late-kinematic localization of uraniferous granites in the Central Zone of the Damara Orogen, Namibia

Basson, I.J.; Greenway, G

doi:10.1016/j.jafrearsci.2004.04.004

Cited by 43 publications

(16 citation statements)

References 39 publications

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“…The effect of late kinematic transverse faulting on enrichment of uranium mineralization has also been reported elsewhere (e.g. Basson & Greenway, 2004).…”

Section: Discussionsupporting

confidence: 66%

A Metamorphic Core Complex Model for the Host of Uranium Mineralization in the Khoshoumi Mountain, Central Iran

Yassaghi

Masoodi

2011

Resource Geology

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A metamorphic core complex model is proposed for Khoshoumi Mountain uranium mineralization located in the Bafq-Saghand metallogenic zone of central Iran. Uranium mineralization occurred in the Chapedoni metamorphic complex. Detailed structural analysis of the complex leads to the interpretation that the mineralization is spatially concentrated in a low angle shear zone of mylonitized migmatite, the lower ductile part of the Chapedoni metamorphic complex. The shear zone that has top to the NE sense of shear in the northeastern and southeastern parts of the mountain and top to the WNW sense of shear in the southwestern part is a detachment zone to the Chapedoni Metamorphic Core Complex (CMCC). The Eocene granite is the plutonic core to the CMCC. The shear zone is cut by several NE-trending left-lateral strike-slip faults. This later faulting is interpreted to account for the significant enrichment of uranium in the southern part of the mountain. The bimodal distribution of radiometric data gathered from exploratory drill holes in this part of the mountain constrains this interpretation. That is, the lower value is from the shear zone across the area but the higher value is from the places that the shear zone is cut by the transverse faults.

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“…The effect of late kinematic transverse faulting on enrichment of uranium mineralization has also been reported elsewhere (e.g. Basson & Greenway, 2004).…”

Section: Discussionsupporting

confidence: 66%

A Metamorphic Core Complex Model for the Host of Uranium Mineralization in the Khoshoumi Mountain, Central Iran

Yassaghi

Masoodi

2011

Resource Geology

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“…Rössing, Valencia, Rössing South, Ida Dome, Goanikontes and Gaudeanmus area) all occur at or near the margins of the NE-NNE trending domes (Fig. 2), and especially along zones of curvature in the domal pattern (Corner, 1983;Anderson et al, 1997;Basson et al, 2004;Kinnaird et al, 2007). Formation of the domes would have been accompanied by the development of joints, fractures, and accommodation space in extensional settings.…”

Section: Petrogenesis Of Uraniferous Leucogranitesmentioning

confidence: 98%

“…2. Map showing distribution of various domes, the Welwitschia Lineament and spatially associated primary uranium deposits of the Central Zone (based on data from Corner, 1983;Anderson and Nash, 1997;Basson and Greenway, 2004;and Kinnaird and Nex, 2007). Dec.…”

Section: Leucogranite Petrologymentioning

confidence: 99%

Genesis and Uranium Sources of Leucogranite‐hosted Uranium Deposits in the Gaudeanmus Area, Central Damara Belt, Namibia: Study of Element and Nd Isotope Geochemistry

Fan

Chen

Wang

et al. 2017

Acta Geologica Sinica (Eng)

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This paper presents a systematic study of major and trace elements and Sm‐Nd isotopes in leucogranites closely related to uranium mineralization in the Gaudeanmus area, Namibia. The results illustrate that the uraniferous leucogranites possess high SiO2 (68.8wt%–76.0wt%, average 73.1wt%) and K (4.05wt%–7.78wt%, average 5.94wt%) contents, and are sub‐alkaline and metaluminous to weakly peraluminous, as reflected by A/CNK values of 0.96–1.07 with an average of 1.01. The leucogranites are rich in light rare earth elements (LREE/HREE = 2.53–7.71; (La/Yb)N = 2.14–10.40), have moderate Eu depletion and high Rb/Sr ratios (2.03–5.50 with an average of 4.36); meanwhile, they are enriched in Rb, K, Th, U and Pb, and depleted in Ba, Nb, Ta, and Sr. The ∊Nd(t) values of uraninites range from –14.8 to –16.5, and the two‐stage Nd model ages are 2.43–2.56 Ga. Detailed elemental and Sm‐Nd isotopic geochemical characteristics suggest that the leucogranites were formed in a postorogenic extensional environment. The U‐rich pre‐Damara basement was the main source of uranium during the primary mineralization event, which is disseminated in leucogranites, whereas the uranium mineralization in veins possibly resulted from remobilization of the primary uranium minerals.

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“…Uranium concentration at Rössing, Namibia, Ilímaussaq, Greenland, and Bokan Mts., USA, is bound to intrusive igneous rocks (Dahlkamp 1979;Basson and Greenway 2004). Uranium is associated with acidic igneous rocks Yellow uranium ore minerals.…”

Section: Magmatogene Uranium Depositsmentioning

confidence: 99%

A comparative study of uranium–thorium accumulation at the western edge of the Arabian Peninsula and mineral deposits worldwide

Dill

2009

Arab J Geosci

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The Rössing Uranium Deposit: a product of late-kinematic localization of uraniferous granites in the Central Zone of the Damara Orogen, Namibia

Cited by 43 publications

References 39 publications

A Metamorphic Core Complex Model for the Host of Uranium Mineralization in the Khoshoumi Mountain, Central Iran

A Metamorphic Core Complex Model for the Host of Uranium Mineralization in the Khoshoumi Mountain, Central Iran

Genesis and Uranium Sources of Leucogranite‐hosted Uranium Deposits in the Gaudeanmus Area, Central Damara Belt, Namibia: Study of Element and Nd Isotope Geochemistry

A comparative study of uranium–thorium accumulation at the western edge of the Arabian Peninsula and mineral deposits worldwide

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