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 {alpha}-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, Jr.. 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).
- X-ray linear dichroism in cubic compounds: The case of Cr3+ in MgAl2O4.
JUHIN A., BROUDER C., 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).
- Structure refinement of a synthetic knorringite, Mg3(Cr0.84Mg0.08Si0.08)2Si3O12.
A. JUHIN, G. MORIN, E. ELKAIM, D. J. FROST, F. JUILLOT, M. FIALIN and G. CALAS.
Amer. Mineral., 95, 59-63 (2010).
- An x-ray absorption near-edge structure study of V3+ in garnet grossular
Ca3Al2(SiO4)3: experiments and theory A. BORDAGE, C. BROUDER, E. BALAN, D.
CABARET, A. JUHIN, M.A. ARRIO, P. SAINCTAVIT, G. CALAS and P. GLATZEL. Amer.
Mineral., 95, 1161-1170 (2010).