The liberation of helium from minerals by the action of heat
1910 ◽
Vol 84
(567)
◽
pp. 70-78
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It is well known that the helium contained in radio-active minerals can be liberated by the action of heat, but, hitherto, no exact quantitative experiments have been made on the subject, and it was thought desirable to conduct such experiments with a view:— (1) To ascertain whether heat may not be used as a substitute for chemical methods in the case of minerals and rocks for which those methods are not convenient, and, if so, the temperatures necessary. (2) To throw, if possible, more light on the way in which the gas is retained within the mineral.