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Polonium dating

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In order to find an age for the Earth, scientists and more recently creationists have looked to the field of geology to find answers. Both proponents of an old Earth and proponents of a young Earth have used characteristics of rocks to justify their theories. One recent theory currently being used as evidence of a young Earth involves what are known as pleochroic halos. Pleochroic halos occur in certain types of igneous rock such as granite that contain minerals such as zircon and monazite, which can be inclusions within other minerals such as mica. It is known that the crystal lattice of these minerals commonly contains traces of certain radioactive elements. These radioactive materials can leave radiation damage in the form of discoloration in the surrounding rock.
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"Polonium Haloes" Refuted

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"Polonium Haloes" Refuted

Polonium is a chemical element with the symbol Po and atomic number A rare and highly radioactive metal with no stable isotopes , polonium is chemically similar to selenium and tellurium , though its metallic character resembles that of its horizontal neighbors in the periodic table : thallium , lead , and bismuth. Though slightly longer-lived isotopes exist, they are much more difficult to produce. Today, polonium is usually produced in milligram quantities by the neutron irradiation of bismuth. Due to its intense radioactivity, which results in the radiolysis of chemical bonds and radioactive self-heating, its chemistry has mostly been investigated on the trace scale only. Polonium was discovered in by Marie and Pierre Curie , when it was extracted from the uranium ore pitchblende and identified solely by its strong radioactivity: it was the first element to be so discovered.
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It's Elemental

It can be an especially difficult challenge when the Creationist author has professional credentials and has published in mainstream scientific journals. One such individual is Robert Gentry, who holds a Master's degree in Physics and an honorary doctorate from the fundamentalist Columbia Union College. For over thirteen years he held a research associate's position at the Oak Ridge National Laboratory where he was part of a team which investigated ways to immobilize nuclear waste. Gentry has spent most of his professional life studying the nature of very small discoloration features in mica and other minerals, and concluded that they are proof of a young Earth.
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