Magmatic Enrichment of Uranium, Thorium, and Rare Earth Elements in Late Paleozoic Rhyolites of Southern New Brunswick, Canada: Evidence from Silicate Melt Inclusions

2011 ◽  
Vol 106 (1) ◽  
pp. 127-143 ◽  
Author(s):  
T. R. Gray ◽  
J. J. Hanley ◽  
J. Dostal ◽  
M. Guillong
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
New Brunswick ◽  
Melt Inclusions ◽  
Silicate Melt ◽  
Late Paleozoic

scholarly journals Interphase distribution of rare and rare earth elements in silicate-fluorine systems at T = 800–1200˚C AND P = 1–2 kbar (experimental investigation)

2019 ◽  
Vol 484 (5) ◽  
pp. 595-599
Author(s):  
A. R. Kotelnikov ◽  
N. I. Suk ◽  
V. S. Korzhinskaya ◽  
Z. A. Kotelnikova ◽  
Yu. B. Shapovalov
Keyword(s):  
Experimental Investigation ◽  
Rare Earth ◽  
Phase Composition ◽  
Rare Earth Elements ◽  
Partition Coefficients ◽  
Silicate Melt ◽  
Fluoride Salt ◽  
Interphase Distribution ◽  
Salt Melt ◽  
Salt Systems

The melting in the system of aluminosilicate (granite) melt — fluoride salt melt at T = 800–1200˚C and P = 1–2 kbar was experimentally investigated. The data on the phase composition of silicate-salt systems and the character of the interphase distribution of ore components are presented. The partition coefficients of rare-earth elements between the granite melt and fluoride phase at 900–1200˚C, P = 1–2 kbar were obtained. It is shown that REE enrich the fluoride phase with respect to the silicate melt. Elements of the (V, Nb, Ta), (Ti, Zr, Hf) groups almost always prefer a silicate melt relative to fluoride.

Geochemical ‘Golden Spike’ for Lower Palaeozoic metabentonites

2008 ◽  
Vol 99 (3-4) ◽  
pp. 177-187 ◽  
Author(s):  
Richard A. Batchelor
Keyword(s):  
Rare Earth ◽  
Chemical Composition ◽  
Rare Earth Elements ◽  
Melt Inclusions ◽  
Geochemical Data ◽  
Isotopic Ratios ◽  
Bulk Rock ◽  
Geochemical Parameters ◽  
Lower Palaeozoic ◽  
To Come

ABSTRACTA number of approaches to interpreting geochemical data for categorising and correlating metabentonites are presented. Bulk rock geochemistry, combined with data from cognate minerals, provides the most robust means of characterising an altered ash bed. While it is not possible at present to identify one single parameter which can uniquely fingerprint an altered ash bed, it is possible to come close to an unique fingerprint, or ‘Golden Spike’, by utilising an array of geochemical parameters comprising bulk rock element ratios, Rare Earth Elements, Sr and Nd isotopic ratios in apatite, composition of sandine phenocrysts, and the chemical composition of melt inclusions.

Flame spectra of the rare-earth elements*

1962 ◽  
Vol 18 (4) ◽  
pp. 1127-1153
Author(s):  
V FASSEL ◽  
R CURRY ◽  
R KNISELEY
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
The Rare Earth
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