scholarly journals The Experimental Research of the Influence of Yttrium-Based Heavy Rare Earth Compound Vermicularizing Alloy to Organization and Graphite Morphology of Vermicular Cast Iron

2018 ◽  
Vol 08 (04) ◽  
pp. 341-345
Author(s):  
艳 王
Keyword(s):  
Rare Earth ◽  
Cast Iron ◽  
Experimental Research ◽  
Heavy Rare Earth ◽  
Rare Earth Compound ◽  
Graphite Morphology

Magnetic and structural phase transition in heavy rare-earth compound DyB6

1997 ◽  
Vol 241-243 ◽  
pp. 696-698 ◽  
Author(s):  
K Takahashi ◽  
H Nojiri ◽  
K Ohoyama ◽  
M Ohashi ◽  
Y Yamaguchi ◽  
...  
Keyword(s):  
Phase Transition ◽  
Rare Earth ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Heavy Rare Earth ◽  
Rare Earth Compound

Magnetic susceptibility of liquid heavy rare earth metals

1979 ◽  
Vol 40 (C5) ◽  
pp. C5-260-C5-261 ◽  
Author(s):  
M. Müller ◽  
E. Huber ◽  
H.-J. Güntherodt
Keyword(s):  
Magnetic Susceptibility ◽  
Rare Earth ◽  
Rare Earth Metals ◽  
Heavy Rare Earth

Selective recovery of heavy rare earth elements from apatite with an adsorbent bearing immobilized tridentate amido ligands

2016 ◽  
Vol 159 ◽  
pp. 157-160 ◽  
Author(s):  
Takeshi Ogata ◽  
Hirokazu Narita ◽  
Mikiya Tanaka ◽  
Mihoko Hoshino ◽  
Yoshiaki Kon ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Heavy Rare Earth ◽  
Amido Ligands ◽  
Selective Recovery ◽  
Heavy Rare Earth Elements

Rare-earth crystal chemistry of thalénite-(Y) from different environments

2018 ◽  
Vol 82 (2) ◽  
pp. 313-327
Author(s):  
Markus B. Raschke ◽  
Evan J. D. Anderson ◽  
Jason Van Fosson ◽  
Julien M. Allaz ◽  
Joseph R. Smyth ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Spatial Scales ◽  
Structure Refinement ◽  
X Ray Diffraction ◽  
Heavy Rare Earth ◽  
Heavy Rare Earth Element ◽  
X Ray ◽  
Golden Horn

ABSTRACTThalénite-(Y), ideally Y3Si3O10F, is a heavy-rare-earth-rich silicate phase occurring in granite pegmatites that may help to illustrate rare-earth element (REE) chemistry and behaviour in natural systems. The crystal structure and mineral chemistry of thalénite-(Y) were analysed by electron microprobe analysis, X-ray diffraction and micro-Raman spectroscopy from a new locality in the peralkaline granite of the Golden Horn batholith, Okanogan County, Washington State, USA, in comparison with new analyses from the White Cloud pegmatite in the Pikes Peak batholith, Colorado, USA. The Golden Horn thalénite-(Y) occurs as late-stage sub-millimetre euhedral bladed transparent crystals in small miarolitic cavities in an arfvedsonite-bearing biotite granite. It exhibits growth zoning with distinct heavy-rare-earth element (HREE) vs. light-rare-earth element (LREE) enriched zones. The White Cloud thalénite-(Y) occurs in two distinct anhedral and botryoidal crystal habits of mostly homogenous composition. In addition, minor secondary thalénite-(Y) is recognized by its distinct Yb-rich composition (up to 0.8 atoms per formula unit (apfu) Yb). Single-crystal X-ray diffraction analysis and structure refinement reveals Y-site ordering with preferential HREE occupation of Y2 vs. Y1 and Y3 REE sites. Chondrite normalization shows continuous enrichment of HREE in White Cloud thalénite-(Y), in contrast to Golden Horn thalénite-(Y) with a slight depletion of the heaviest REE (Tm, Yb and Lu). The results suggest a hydrothermal origin of the Golden Horn miarolitic thalénite-(Y), compared to a combination of both primary magmatic followed by hydrothermal processes responsible for the multiple generations over a range of spatial scales in White Cloud thalénite-(Y).

scholarly journals Dipolar Excitations at theLIIIX-Ray Absorption Edges of the Heavy Rare-Earth Metals

2007 ◽  
Vol 99 (24) ◽  
Author(s):  
S. D. Brown ◽  
P. Strange ◽  
L. Bouchenoire ◽  
B. Zarychta ◽  
P. B. J. Thompson ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Heavy Rare Earth ◽  
Absorption Edges
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