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Appendix: Radiohalos in a Radiochronological and Cosmological Perspective
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[p. 278]
Figure 7. Idealized schematic of 238U,
218Po, 214Po, and 210Po halos.
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Figure 8. 238U halo in fluorite. (× 535)
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Figure 9. 218Po halo in fluorite. (× 535)
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[p. 279]
Figure 10. 214Po halos in mica. (× 250)
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Figure 11. 218Po halos in mica. (× 250)
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Figure 12. The Spectacle Halo,
an overlapping series of 210Po halos discovered in a piece of
biotite from the Silver Crater mine, Faraday Township, Ontario.
Reproduced from ref. (3) by permission of Nature. (× 560)
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