Ibérica na região de Trás-os-Montes (NE Portugal) - Universidade ...

CAD. LAB. XEOL. LAXE 26 (2001) Análisis microestructural de caolinitas 97
properties of kaolinites. Clays Clay miner., 26
(6): 384-396.
KÜHNEL, R.A.; VAN HILTEN, D. & ROORDA,
H.J. (1973). The crystallinity of minerals in
alteration profiles: an example of goethites in
laterite profiles. Deltf. Progr. Rep. Series E:
Geosci., 1: 1-8.
KÜHNEL, R.A.; ROORDA, H.J. & STEENSMA,
J.J. (1975). The crystallinity of minerals- a new
variablein pedogenetic processes: a study of
goethite and associated silicates in laterites.
Clays Clay miner., 23: 349-354.
KUZVART, M. (1977). Aspects of kaolin genesis.
Proc. 8th Int. Kaolin Symp. and meetinng on
Alunite. Madrid-Rome, k-12: 12p.
LA IGLESIA, A. & GALÁN, E. (1975). Halloisitekaolinite
transformation at room temperature.
Proc. Int. Clay Conf. Madrid, pp.: 173-185.
LANGFORD, J.I. (1978). A rapid method for
analysing breadths of diffraction and spectral
lines using the Voigt function. J. Appl. Cryst.,
11: 10-14.
LeBAIL, A & LOUËR, D. (1978). Smoothing and
validity of crystallite-size distributions from Xray
line-profile analysis. J. Appl. Cryst., 11: 50-
55.
LIETARD, P. (1977). Contribution à l'étude des pro -
priétés physicochimiques et morphologiques des kao -
lins. Tesis doctoral. Ecole National Superieur de
Géologie Appliquée et Prospection Minière
(Nancy, Francia).
LIU, S.Y. & BAI, K. (1982). Investigation on the
historical records of kaolin. Chin. Ceram., 7:
141-170.l
LOTZE, F.(1945). Zur Gliederung der Varisziden
der Iberischen Meseta. Geotekt. Forsch., 6: 78-
92.
MARCOS, A. (1973). Las series del Paleozoico inferior
y la estructura herciniana del Occidente de
Asturias (NW de España). Trabajos de Geología,
Univ. Oviedo. 6: 1-113.
MARTÍN SERRANO, A. (1994). El relieve del
Macizo Hespérico: genesis y cronología de los
prinncipales elementos mineralógicos. Cadernos
Lab. Xeolóxico de Laxe, 15: 37-55.
MARTÍN POZAS, J.M.; MARTÍN VIVALDI, J.L.
& RODRIGUEZ GALLEGO, M. (1969).
Análisis cuantitativo de filosilicatos de la arcilla
por difracción de rayos X. Anal. Real. Soc. Esp.
Fis. y Quim. B. 55: 109-112.
MARTINEZ-CATALAN, J.R. (1981). Estatigrafía
y estructura del Domo de Logo (Sector Oeste de la
Zona Asturoccidental-leonesa). Tesis Univ.
Salamanca, 317p.
M I G N O T, J. & RONDOT, D. (1975). A c t a
Metallurgica, 23: 1321-24.
MIGNOT, J. & RONDOT, D. (1977).Utilisation
de methodes d´approximation pour l´etude des
coefficientes du developpement en series de
Fourier des raies de diffraction X. Acta Cryst.,
A33: 327-333.
MITRA, G.B. (1963). Structure defects in kaolinite.
Z. Kristallogr., 119: 161-175.
MITCHELL, W.A. (1959). Quantitative annalysis
by x-ray powder methods. Miner. Mag. 32: 492-
499.
MOLINA, E.; CANTANO, M.; VICENTE, M.A.
& GARCÍA RODRIGUEZ, P. (1990) Some
aspects of paleoweathering in the Iberian.
Catena, 17: 333 – 346.
MOLINA, E.; GARCÍA GONZALEZ, M.T. &
ESPEJO, R. (1991) Study of paleoweathering
on the Spanish Hercynian Basament Montes de
toledo (central Spain). Catena, 18: 345–354.
M U R R AY, H.H. & LYONS, S.C. (1956).
Correlation of paper-coating quality with
degree of crystal perfection of kaolinite. Clays
clay miner., 4: 31-40
NANDI, R.K. & SEN GUPTA, S.P. (1978). The
analysis of X-ray diffraction profiles from
imperfect solids by an application of convolution
relations. J. Appl. Cryst. 11: 6-9.
NEDER, R.B.; BURGHAMMER, M.; GRASL,
TH.; SCHULZ, H.; BRAM, A. & FIEDLER, S.
(1998). Refinement of the kaolinite structure
from single-crystal synchrotron data. Clays clay
miner., 4: 487-494.
NEWNHAM, R.E. (1961). A refinement of the
dickite structure and some remarks on polimorphism
in kaolin minerals. Mineral. Mag., 32:
683-704.
NIETO, F. & SANCHEZ NAVAS, A. (1994). A
comparative XRD and TEM study of the physical
meaning of the white mica “crystallynity”
index. Eur. Jour. Miner., 6: 611-621
NISKANEN, E. (1964). Reduction of orientation
effects in the quantitative X-ray diffraction
analysis of kaolin minerals. A m e r i c a n
Mineralogist, 49: 705-714.
NOBLE, F.R. (1971). A study of disorder in kaolinite.
Clay Miner., 9: 71-80.
OLEJNIK, S.; POSNER, A.M. & QUIRK, J.P.