Valuable elements in Chinese coals: A review

S Dai, X Yan, CR Ward, JC Hower, L Zhao… - Coal Geology of …, 2020 - taylorfrancis.com
China is, and in the coming decades should continue to be, the largest producer and user of
coal in the world. The high volume of coal usage in China has focused attention not only on …

Altered volcanic ashes in coal and coal-bearing sequences: A review of their nature and significance

S Dai, CR Ward, IT Graham, D French, JC Hower… - Earth-Science …, 2017 - Elsevier
Volcanic ashes in coal and coal-bearing sequences typically occur as persistent bands
within coal seams (generally as tonsteins, but in a few cases as bentonites, K-bentonites, or …

Resetting monazite ages during fluid-related alteration

ML Williams, MJ Jercinovic, DE Harlov, B Budzyń… - Chemical …, 2011 - Elsevier
Fluid-related coupled dissolution–reprecipitation processes can modify the composition of
monazite and other orthophosphate minerals at temperatures well below diffusional closure …

Characteristics and genesis of ion adsorption-type rare earth element deposits

K Sanematsu, Y Watanabe - 2016 - pubs.geoscienceworld.org
Ion adsorption-type rare earth element (REE) deposits are the predominant source of heavy
REE (HREEs) and yttrium in the world. Economic examples of the deposits are confined …

Low-temperature alteration of monazite: Fluid mediated coupled dissolution–precipitation, irradiation damage, and disturbance of the U–Pb and Th–Pb chronometers

AM Seydoux-Guillaume, JM Montel, B Bingen… - Chemical …, 2012 - Elsevier
Low-temperature alteration of monazite is documented in three centimeter-sized monazite
crystals from Norway (Arendal), Madagascar (Ambato), and Sri Lanka. The three crystals …

Rare earth element mineralogy and geochemistry in a laterite profile from Madagascar

A Berger, E Janots, E Gnos, R Frei, F Bernier - Applied geochemistry, 2014 - Elsevier
In this study, rare earth element (REE) distribution has been investigated in a weathering
profile from central Madagascar. Combination of bulk rock geochemical data (elements and …

REE mineralogy and resources

M Hoshino, K Sanematsu, Y Watanabe - … on the physics and chemistry of …, 2016 - Elsevier
Recent increase of the demand for rare earth elements (REEs), especially dysprosium and
terbium used in the permanent magnet industry is modifying a concept of the REE …

Experimental determination of stability relations between monazite, fluorapatite, allanite, and REE-epidote as a function of pressure, temperature, and fluid …

B Budzyn, DE Harlov, ML Williams… - American …, 2011 - pubs.geoscienceworld.org
The experimental alteration of monazite to allanite, REE-epidote, fluorapatite, and/or
fluorapatite-britholite was investigated at 450 to 610 MPa and 450 to 500° C. Experiments …

Geochemistry of low-temperature (< 350° C) metamorphic and hydrothermal monazite

JW Zi, JR Muhling, B Rasmussen - Earth-Science Reviews, 2024 - Elsevier
Monazite is a light rare earth element (LREE)-rich phosphate mineral that occurs as a trace
phase in a wide variety of rock types, where it forms in response to different geological …

Experimental metasomatism of monazite and xenotime: mineral stability, REE mobility and fluid composition

CJ Hetherington, DE Harlov, B Budzyń - Mineralogy and Petrology, 2010 - Springer
In this study a Th-bearing monazite from a Brazil beach sand, a low Th monazite from a
Malawi carbonatite, and a xenotime from a pegmatite in northern Pakistan were …