The absorption spectra of tektites and other natural glasses

Details The absorption spectra of tektites and other natural glasses The absorption spectra of tektites and other natural glasses

Oct 1958

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1958gecoa..14..279c&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 14, Issue 4, pp.279-286

Computer Science

2

Scientific paper

The absorption spectra of individual tektites known as australite, bediasite, indochinite, javanite, moldavite, and philippinite are compared in the 3000-26,000 Å region with that of Aouclloul glass, Libyan Desert glass, americanites, obsidian, perlite and an industrial welding goggle glass. The most characteristic feature of the absorption spectra of all these glasses in the range studied is the ferrous band with maximum in the 1.1-1.2 , wavelength region of the near-infra-red. The spectra of thcso materials were not affected by X-ray treatment with the exception of an obsidian which showed an increase in the ultra-violet cut-off and growth in the ferrous band. The refractive indices ( N D ) are compared and appear to be related to total iron content of the glass.

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