The crystal-chemical, vibrational, and optical properties of microporous aluminosilicate
cancrinite have been investigated by combining electron probe microanalysis, single-crystal …

Incorporation of ions into the crystal structure of beryl (Be 3 Al 2 [Si 6 O 18]) can take place
by direct ion-to-ion substitution of the framework components Al 3+, Be 2+ and Si 4+ or by …

The yellow color of beryl has been related to charge-transfer between Fe3+ ions substituting
for octahedral Al3+ ions in the crystal and the surrounding oxygen ions. This assumption is …

Abstract Alexandrite (BeAl 2 O 4: Cr 3+) is a variety of the chrysoberyl mineral widely found
in Brazil. This mineral is expected to have potential as a natural dosimeter since its …

Trivalent iron ions substituting for Al3+ are present in many beryls and are abundant in dark
red and dark blue beryl. These ions do not contribute any color to the crystals. Dark blue …

The thermoluminescence characteristics of natural green beryl are reported. Aliquots of the
sample used were irradiated using a beta source at a dose rate of 0.1 Gy/s. The glow curves …

The EPR spectra of Maxixe-type beryl contain a large number of overlapping signals. The
angular dependence of the 1: 3: 3: 1 signal typical for the CH 3 radical shows that this …

The spectral decomposition analysis was applied to the optical absorption spectra of green
and colorless beryl crystals from the Brazilian Eastern Pegmatitic province in the natural …

The results of investigation of photoluminescence and UV-Visible absorption spectra of
natural beryl crystals from Ural Mountains before and after fast neutron irradiation and …

The spectral decomposition analysis was applied to the optical absorption spectra of
spodumene crystals from the Brazilian eastern pegmatitic province. The analyzed samples …