Abstract
The infrared absorption spectra of selected borate minerals have been observed with crystalline powders in the wavelength range from 2 to 16 microns. The spectra characteristic to borate polyatomic ions appear within the range from 7 to 16 microns and are presented in Figs. 1-6. These characteristic absorption bands are shown to be useful in the qualitative analysis of borate polyatomic ions.
In connection with this investigation, a discussion on the structures of borate polyatomic ions is also given.
