Titanite Visible Spectra (380 - 1100 nm)
Titanite, CaTi(SiO4)O, may contain iron, chromium (green) or rare earth elements
which give it color. It also is subject to radiation damage which gives
it a brown color. A full interpretation of all the broad bands in the
titanite spectrum has yet to be presented.
Image of the titanite absorption spectrum
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yellow-green titanite spectrum; Cleavage face of a 4 cm
crystal from (Lac Alaotra?) Madagascar. 3.91 mm thick. Weak but sharp
absorption lines from the rare earth elements are visible in this
spectrum. Most prominent in this spectrum are neodymium lines between
700 and 800 nm, and an ytterbium line at 972 nm.
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revised
8-Jul-2022
