Science and Technology of Nuclear Installations / 2011 / Article / Tab 8

Research Article

Radiogenic Lead with Dominant Content of 208Pb: New Coolant and Neutron Moderator for Innovative Nuclear Facilities

Table 8

Main deposits of uranium, thorium, and mixed uranium-thorium ores. Elemental compositions of minerals and isotope compositions of radiogenic lead.

DepositU/Th/Pb
(wt.%)
204Pb/206Pb/207Pb/208Pb
(at.%)
Age,
109 years

Monazite (Guarapari, Brazil)1.3/59.3/1.50.005/6.03/0.46/93.50.52–0.55
Monazite (Manitoba, Canada)0.3/15.6/1.50.010/10.2/1.86/87.91.83–3.18
Monazite (Mt. Isa Mine, Australia)0.0/5.73/0.30.038/5.44/0.97/93.61.00–1.19
Monazite (Las Vegas, USA)0.1/9.39/0.40.025/9.07/1.13/89.80.77–1.73
Uraninite (Singar Mine, India)64.3/8.1/8.9—/89.4/6.44/4.180.885
Monazite (South Bug, Ukraine)0.2/8.72/0.90.010/6.04/0.94/93.01.8–2.0