Crystal chemistry of the monazite structure

N Clavier, R Podor, N Dacheux - Journal of the European Ceramic Society, 2011 - Elsevier
The AXO4 monazite-type compounds form an extended family that is described in this
review in terms of field of stability versus composition. All the substitution possibilities on the …

U-Th-Pb dating of phosphate minerals

TM Harrison, EJ Catlos… - Reviews in Mineralogy …, 2002 - pubs.geoscienceworld.org
The dominant occurrence of phosphate minerals in crystalline rocks is as accessory phases,
most notably apatite, monazite, and xenotime. Because these minerals tend, to varying …

The chemical composition of REE-Y-Th-U-rich accessory minerals in peraluminous granites of the Erzgebirge-Fichtelgebirge region, Germany, Part I: The monazite …

HJ Foerster - American Mineralogist, 1998 - degruyter.com
Peraluminous granites of the Erzgebirge-Fichtelgebirge, Germany, are hosts of various
members of the monazite group of minerals that display an unprecedented compositional …

Monazite as a promising long-term radioactive waste matrix: Benefits of high-structural flexibility and chemical durability.

N Dacheux, N Clavier, R Podor - American Mineralogist, 2013 - degruyter.com
ABSTRACT Monazite (Ln3+PO4) and related solid solutions are a well-known source of rare
earth elements on earth. They may also accommodate large amounts of thorium and …

Contrasted monazite hydrothermal alteration mechanisms and their geochemical implications

F Poitrasson, S Chenery, DJ Bland - Earth and Planetary Science Letters, 1996 - Elsevier
In spite of the major importance of monazite as a repository for the rare earths and Th in the
continental crust, for U Th Pb geochronology, and as a possible form for high-level …

Composition and origin of intermediate solid solutions in the system thorite–xenotime–zircon–coffinite

HJ Förster - Lithos, 2006 - Elsevier
A comprehensive survey of the accessory-mineral assemblages in Variscan granites of the
German Erzgebirge and Pan-African granites from Jordan revealed the occurrence of …

Preparation and characterization of lanthanum–gadolinium monazites as ceramics for radioactive waste storage

O Terra, N Clavier, N Dacheux, R Podor - New journal of Chemistry, 2003 - pubs.rsc.org
Several La1− xGdxPO4 solid solutions were prepared in the monazite-or rhabdophane-type
structures for various x values using three methods of preparation (direct evaporation …

Immobilization of tetravalent actinides in phosphate ceramics

O Terra, N Dacheux, F Audubert, R Podor - Journal of Nuclear Materials, 2006 - Elsevier
Three phosphate-based ceramics were studied for the immobilization of tri-and tetravalent
actinides: britholite Ca9Nd1-xAnxIV (PO4) 5-x (SiO4) 1+ xF2, monazite/brabantite Ln1 …

The current state and future of accessory mineral research

F Poitrasson, JM Hanchar, U Schaltegger - Chemical Geology, 2002 - Elsevier
Over the past decade, there have been many significant advances in the area of accessory
minerals research, notably permitted by the development of imaging and in situ …

Microstructure of 24-1928 Ma concordant monazites; implications for geochronology and nuclear waste deposits

AM Seydoux-Guillaume, R Wirth, A Deutsch… - … et Cosmochimica Acta, 2004 - Elsevier
The microstructure of monazite was studied using scanning electron microscopy (SEM),
electron microprobe analysis (EMP), X-ray diffraction patterns (XRD), and transmission …