Selected
Publications
Crystal
chemistry
of minor and trace elements in minerals
- Etude de
la
coloration bleue de quelques fluorites naturelles. G. CALAS. Bull.
Soc.
fr. Minéral. Cristallogr.,
95,
470-474 (1972).
-
An upper limit for the crystallization temperature of yellow fluorites.
G.
CALAS and J.C. TOURAY. Modern Geol., 3, 209-210 (1972).
-
On the blue colour of natural banded
fluorites.
G. CALAS. Miner. Mag., 38, 977-979 (1972).
- Color
centers,
associated rare-earth ions and the origin of coloration in natural
fluorites.
H. BILL and
G.
CALAS. Phys. Chem. Miner., 3, 117-131 (1978).
- Etudes
spectroscopiques du fer dans les heulandites rouges de Val Fassa. D. BONNIN et G. CALAS. Bull.
Minéral., 101, 395-398 (1978).
-
Cristallochimie
du fer dans les cassitérites bretonnes. G. CALAS et J.F.
COTTRANT.
Bull. Minéral., 105, 598-605 (1982).
- Caractérisation
d'oxydes
de cuivre par spectrométrie d'absorption X. B. HANNOYER,
J.
DURR, G. CALAS, J. PETIAU and M. LENGLET. Mater.
Res. Bull., 17, 435-442 (1982).
- Thermoluminescence,
fluorescence and Electron Paramagnetic Resonance properties of
synthetic
hydrothermal scheelites. R. CARUBA, P.
IACCONI,
J.F. COTTRANT and G. CALAS. Phys. Chem. Minerals, 9, 223-228 (1983).
- Contribution de la
spectrométrie d'absorption X à l'étude d'oxydes de
fer à valence mixte.
Analyse de la structure fine du seuil d'absorption K. M. LENGLET, D. LE
CALONNEC,
J. DURR, B. HANNOYER, G. CALAS, J. PETIAU and F. JEANNOT. Mater. Res. Bull., 18, 935-944 (1983).
-
Comportement du chrome dans les minéraux d'altération du
gisement
de Campo-Formoso (Bahia, Brésil). G.
CALAS,
A. MANCEAU, A. NOVIKOFF et H. BOUKILI. Bull. Minéral.,
107, 755-766 (1984).
- Trace element distribution coefficients in
alkali basalt series. F. LEMARCHAND, B. VILLEMANT and G. CALAS. Geochim. Cosmochim. Acta., 51, 1071-1081 (1987).
- K x-ray
absorption
spectra and electronic structure of chalcopyrite CuFeS2. J. PETIAU,
Ph.
SAINCTAVIT
and
G. CALAS. Mater. Sci.
Eng., B1, 237-249 (1988).
-
Alumina fused cast refractory aging monitored by nickel crystal
chemistry.
L. Galoisy, G. Calas and M. Maquet. J. Mater. Res., 6, 2434-2441
(1991).
- Mn2+-activated
luminescence
in dolomite, calcite and magnesite:
quantitative
determination of manganese and site distribution by EPR and CL
spectroscopy.
A. el ali, v. barbin, g.
calas,
b. cervelle, k. ramseyer and j. bouroulec. Chem. Geol.,
104, 189-202 (1993).
- XANES and
crystal field spectroscopy of five-ccordinated
nickel
(II) in potassium-nickel phosphate. L. GALOISY and G. CALAS. Mater. Res. Bull., 28, 221-228 (1993).
-
Inhomogeneous
distribution of Cr impurities in 
-Al2O3
during refractory aging. L.
Galoisy
and G. Calas. J.
Mater. Research,
8,
1153-1157 (1993).
-
Intracrystalline distribution of Ni in San
Carlos olivine: an EXAFS study. L. GAloisy, G. Calas and G.E. Brown. Amer.
Mineral., 80, 1089-1092 (1995).
-
Cr3+
in phyllosilicates: influence of the
nature of
coordinating ligands and their next
cationic neighbors
on the crystal field parameters. Platonov, A.N., Langer, K., Andrut,
M. and Calas, G.
In:
Dyar, M.D., Mc Cammon,
C.A., Schaeffer, M.W. (Editors), Mineral
spectroscopy:
A tribute to Roger G. Burns: Geochem.
Soc.
Spec. Pub.,
5, 41-48 (1996).
- Role
of structural Fe(III) and iron oxide nanophases in mullite
coloration . A. DJEMAI, G. CALAS and J.-P. MULLER.
J. Amer. Ceram. Soc., 84, 1627-1631 (2001).
- Native Cd+ centers in sedimentary fluorapatite. G. MORIN, Th. ALLARD, E. BALAN,
Ph.
ILDEFONSE and G. CALAS. Eur. J. Mineral., 14, 1087-1094 (2002).
-
Incorporation of Cr3+ in
dickite: a spectroscopic study. E.
Balan, T. Allard, G. Morin and G. Calas. Phys. Chem.
Minerals, 29, 273-279
(2002).
- On the
origin of the green
color of variscite. G. Calas, L. Galoisy and A. Kiratisin. Amer.
Mineral.,
90, 984-990 (2005).
-
The oxidation state of vanadium in titanomagnetite.
E. BALAN, J. P.R. DE VILLIERS, S.G. EECKHOUT, P. GLATZEL, M. TOPLIS, E.
FRITSCH,
T. ALLARD, L. GALOISY, and G. CALAS. Amer. Mineral., 91,
953-956 (2006).
- Structural relaxation
around substitutional Cr3+ in MgAl2O4.
A. JUHIN, G. CALAS, D. CABARET,
L.
GALOISY and J.L. HAZEMANN. Phys. Rev.
B 76, 054105 (2007).
-
Structural relaxation around substitutional Cr3+ in pyrope
garnet. A.
JUHIN, G. CALAS, D. CABARET, L. GALOISY and J.L. HAZEMANN. Amer. Mineral., 93, 800-805 (2008).
- Angular dependence of Cr K pre-edge in MgAl2O4:
experiments and calculations. JUHIN A., C. BROUDER, ARRIO M.A., CABARET
D., SAINCTAVIT P., BORDAGE A., BALAN E., CALAS G., EECKHOUT S.G. and
GLATZEL P. Phys. Rev. B, 78, 195103 (2008).
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