Wadsleyite Spectra (Visible and Infrared)
Wadsleyite is a mineral found on Earth in some meteorites. It is believed to be
abundant at depth in the planet where it exists under high pressure.
The data presented below are from synthetic material synthesized under high
pressure and temperature conditions. Its hydrogen content is of interest
because of the possiblity that this phase can store significant
amounts of the element hydrogen at depth in the mantle of planet Earth.
Wadsleyite 2 is new synthetic hydrous silicate phase related to
wadsleyite which can contain even larger amounts of hydrogen.
Reference: Smyth & Kawamoto, Earth & Planetary Sci Let (1997).
It has a dark green color from its Fe2+ content.
Image of the wadsleyite 2 visible absorption spectrum
- wadsleyite 2 spectrum, 3K;
Single crystal synthetic material. Plotted as 0.05 mm thick.
Composite spectra merged from data from different machines.
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