Celestine Visible Spectra
Celestine, would be colorless if it were the pure strontium sulphate
end
member.
Celestine absorption spectrum
- CIT-13378 spectrum;
from the Santa Levrada Mine, near Mapimi, Durango, Mexico,
The blue
celestine
sample is 23.18 mm thick. Data Files: E \\ beta
= b-axis.; E
\\ gamma = a-axis.
A radiation damage color center is the cause of the color. A number of
radiation-induced centers have been identified by EPR spectroscopy in
celestine
including SO3-, SO2-
, O-,
PO32-, and PO22-
.
Bakhtin, Khasanov and Vinokurov (1973) attribute the bands at ∼435 nm
to SO2- and at ∼620 nm to
O-
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revised
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