Mineralogical Magazine, 2001, V 65, N 1, February.

Structural discontinuities in plagioclase and 
constraints on mixing properties of the low series: a
computational study
V. L. Vinograd; A. Putnis; H. Kroll
1
Lattice defects in lawsonite: a TEM investigation  
F. Cámara; J. C. Doukhan; M. A. Carpenter
33

A high-pressure structural study of lawsonite using
angle-dispersive powder-diffraction methods with
synchrotron radiation
A. R. Pawley; D. R. Allan
41

Partial dehydration of laumontite: thermodynamic
constraints and petrogenetic implications
P. S. Neuhoff; D. K. Bird
59

Synneusis of zircon: why not? 
P. Alexandrov
71

Mineralogy and geochemistry of trace elements in
bauxites: the Devonian Schugorsk deposit, Russia
L. E. Mordberg; C. J. Stanley; K. Germann
81

Leonite [K2Mg(SO4)2.4H2O], konyaite
[Na2Mg(SO4)2.5H20] and syngenite [K2Ca(SO4)2.H2O]
from Tausoare Cave, Rodnei Mts, Romania
B. P. Onac; W. B. White; I. Viehmann
103

Rengeite, Sr4ZrTi4Si4O22, a new mineral, the Sr-Zr
analogue of perrierite from the Itoigawa-Ohmi
district, Niigata Prefecture, central Japan
H. Miyajima; S. Matsubara; R. Miyawaki; K. Yokoyama; K. Hirokawa
111

Sheet silicates as effective carriers of heavy metals
in the ophiolitic mine area of Vigonzano (northern Italy)
E. Dinelli; F. Tateo
121

Three compositional varieties of perovskite from  
kimberlites of the Lac de Gras field (Northwest Territories, Canada)
A. R. Chakhmouradian; R. H. Mitchell
133
  
Book Reviews  
149