Results 91 to 100 of about 5,096 (207)

Monazite in polymetallic chlorite-(tourmaline)-quartz-(fluorite)-cassiterite-sulphide lodes and its potential for constraining the chronology of magmatic hydrothermal mineralisation in Cornwall. [PDF]

open access: yes, 2013
Monazite [(Ce, La, Th, Nd, Y) PO4] occurs far more widely within the magmatic hydrothermal lode systems of Cornwall than has been previously recognised. In situ and mine dump specimens analysed by binocular and transmitted light microscopy, SEM, XRD and
Jewson, C.   +2 more
core  

Responsible sourcing of critical metals [PDF]

open access: yes, 2017
This is the author accepted manuscript. The final version is available from Mineralogical Society of America via the DOI in this recordMost critical raw materials, such as the rare earth elements (REE), are starting products in long manufacturing supply ...
Alain Rollat   +15 more
core   +1 more source

The Distribution of Major and Trace Elements Across a Garnet Population From the Kalak Nappe Complex (Finnmark, Scandinavian Caledonides): Evidence for Size‐Dependent Growth and Compositional Equilibration in the Garnet Zone

open access: yesJournal of Metamorphic Geology, Volume 43, Issue 6, Page 613-640, August 2025.
ABSTRACT A garnet population from the lower Kalak Nappe Complex in Finnmark (Arctic Norway) was characterized using high‐resolution X‐ray micro‐computed tomography, electron probe micro‐analysis and laser ablation inductively coupled plasma mass spectrometry mapping to assess the extent of compositional equilibration and the controlling crystallization
M. T. A. G. Yogi   +3 more
wiley   +1 more source

REE MINERALS OF PHYLLITES OF THE MAIN CENTRAL THRUST OF THE TAMOR WINDOW AREA, EASTERN NEPAL [PDF]

open access: yesМинералогия, 2018
A sample of chlorite-muscovite fillite metamorphosed under greenschist facies of metamorphism below biotite isograde of the Lower Himalayan Sequence from the Main Central Thrust zone of the Tamor tectonic window area (Eastern Nepal) are studied.
E.V. Belogub   +2 more
doaj  

REE-bearing minerals in the Rapakavi Grante, Southern Finland

open access: yesOpen Geosciences, 2015
The studied rock samples belong to the classic1615–1645 Ma Wiborg Rapakivi granite terrane of southeasternFinland. Geochemical studies show that the rapakivigranites and associated rocks form metaluminousto peraluminous A-type granites and plot in the ...
Al-Ani Thair
doaj   +1 more source

Indentation recovery in GdPO4 and observation of deformation twinning

open access: yesAIP Advances, 2016
A series of nanoindentation tests on both single and polycrystalline specimens of a monazite rare-earth orthophosphate, GdPO4, revealed frequent observation of anomalous unloading behavior with a large degree of recovery, where previously this behavior ...
Taylor M. Wilkinson   +4 more
doaj   +1 more source

Distinguishing xenotime and zircon in ores and estimating the xenotime content for on-site analysis

open access: yesSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Estimation of the content of the major minerals containing rare earth element (REE) (e.g., xenotime, monazite, and bastnäsite) to extract metal REEs is a critical task for efficient exploration of mines with REE reserves. X-ray-excited optical luminescence (XEOL) imaging is a promising method for estimating the REE-bearing mineral content on-site ...
openaire   +2 more sources

Kajian Konsep Teknologi Pengolahan Pasir Zirkon Lokal Yang Mengandung Monasit, Senotim Dan Ilmenit [PDF]

open access: yes, 2016
The existence of zircon (ZrSiO4) in the nature is mostly associated with some of the valuable oxide compounds (VOC), such as TiO2 and rare earth oxides (REO).
Biyantoro, D. (Dwi)   +2 more
core   +3 more sources

MINERAL COMPOSITION OF Fe-POOR FERRUGINOUS AND CARBONACEOUS SHALES FROM THE ALEXANDRINSKOE AND SAF′YANOVSKOE DEPOSITS (THE URALS) [PDF]

open access: yesМинералогия, 2016
Ferruginous and carbonaceous shales of the Alexandrinskoe and Saf′yanovskoe massive sulfide deposits are composed of pseudomorphic chlorite, quartz and hydromica after hyaloclasts and contain quartz and plagioclase clasts, as well as zircon, apatite ...
N.S. Arkhireeva, V.A. Kotlyarov
doaj  

Rare-Earth Minerals in Martian Meteorite NWA 7034/7533: Evidence for Fluid-Rock Interaction in the Martian Crust [PDF]

open access: yes, 2015
Monazite, chevkinite-perrierite and xenotime are common rare-earth minerals in terrestrial rocks and important repositories for the rare-earth-elements (REE).
Beckett, John   +4 more
core  

Home - About - Disclaimer - Privacy