Abstract

The simple heat treatment for decoloring fluorite crystals of various hues is described. The improvement in transmittance is shown by means of spectrophotometer curves.

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  1. An excellent bibliography on the subject of thermoluminescence is to be found in M. A. Northup and O. I. Lee, "Experiments on thermoluminescence of some common and unusual minerals," J. Opt. Soc. Am. 30, 206 (1940).
  2. Although at the present time there exists a technique for producing synthetic CaF2, the heat treatment discussed in this note is simple as well as very inexpensive and may render available for optical purposes a reasonable fraction of what is now inferior fluorite.

1940 (1)

J. Opt. Soc. Am. (1)

Other (1)

Although at the present time there exists a technique for producing synthetic CaF2, the heat treatment discussed in this note is simple as well as very inexpensive and may render available for optical purposes a reasonable fraction of what is now inferior fluorite.

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