Asteroid Spectroscopy
Asteroid Spectroscopy
Asteroid Spectroscopy
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Clay Mineral Spectra<br />
S. J. Gaffey et al. (1993)<br />
The narrow absorption features<br />
near 1.4, 1.9, 2.2-2.3, 2.5 µm (etc.)<br />
are produced by vibrational<br />
overtones of the H 2 O and OH<br />
molecules.<br />
Their shape and exact position<br />
depends on the crystal structure<br />
and the attached cations.<br />
These spectra parameters are<br />
diagnostic of specific minerals.
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