These spectra were acquired as directional hemispheric spectra using the Adams Beckman Dk-2A.
Gaffey M. J, (1976) Spectral Reflectance Characteristics of the Meteorite Classes, J. Geophys. Res., pp. 905-919.
http://www.planetary.brown.edu/planetary/pds/bin/meadmg.tar.Z Last update 26 May 1995
http://www.planetary.brown.edu/planetary/pds/bin/Gaffeysmet.sea.hqx Last update 26 May 1995