GRR
1833 spectrum; This crystal is
pale green and is atypical for the species. It is believed to come from
Brazil. The three polarizations do not necessarily correspond to the
principal extinction directions. Plotted for 12.05 mm thickness. Data
Files: first
polarization; second
polarization; third
polarization.
Back
to the
list of visible data files
Back
to the Index to Data Files