Results 121 to 130 of about 7,496 (223)

Thermochemistry of monazite-(La) and dissakisite-(La): implications for monazite and allanite stability in metapelites [PDF]

, 2018
Thermochemical properties have been either measured or estimated for synthetic monazite, LaPO4, and dissakisite, CaLaMgAl2(SiO4)3OH, the Mg-equivalent of allanite. A dissakisite formation enthalpy of −6,976.5±10.0kJmol−1 was derived from high-temperature
Brunet, F., Burchard, M., Cemič, L., Goffé, B., Janots, E., Poinssot, C.   +5 more
core  

Fluorapatite from a Pegmatite with Miarolitic Cavities in the Larsemann Hills, East Antarctica: ID-TIMS U-Pb Ages and LA-ICP-MS Trace-Element Constraints on the Late Pan-African Orogenic Evolution

Geosciences
Pegmatites with miarolitic cavities have not previously been reported from the Larsemann Hills, East Antarctica, and their age and origin remain poorly constrained.
Ivan A. Babenko, Nailya G. Rizvanova, Sergey G. Skublov, Yuri A. Bishaev, Irina V. Talovina, Olga L. Galankina, Alexander V. Kuznetsov   +6 more
doaj   +1 more source

A geochemical drainage survey of the Fleet granitic complex and its environs [PDF]

, 1978
A regional geochemical drainage reconnaissance programme was undertaken over 900 km2 of south-west Scotland centred on the Fleet granitic complex. Rocks of Ordovician and Silurian age outcrop over the area, into which have been intruded the Fleet and ...
Brown, M.J., Date, A.R., Leake, R.C., Smith, T.K.   +3 more
core  

New data on mineralogy of granitic pegmatites Mt. Soroch′ya, Southern Urals

Литосфера, 2016
Mineralogy of granitic pegmatites of Mt. Soroch′ya near Zlatoust which ore included in the Upper Riphean metamorphic mica-garnet, staurolite-garnet, and wollastonite-sillimanite-garnet schists of the Kuvash Formation is examined. Zonal pegmatite veins 30-
V. I. Popova, M. A. Rassomahin, V. A. Kotlyarov   +2 more
doaj   +2 more sources

Crystallization age of alpine cleft monazite-(Ce) and correlation with tectonically driven hydrothermal dissolution/precipitation events

, 2017
Hydrothermal monazite-(Ce) from open clefts/fissure veins in the Alps was utilized as a complimentary tool for dating brittle-ductile/brittle deformation. It may preserve evidence of several crystallization events, commonly over 4-7 Ma, up to ~20 Ma. Monazite-(Ce) crystallizes within ~350-200 °C during tectonic and/or fluid flux events disequilibrating
openaire   +2 more sources

Pan-African alkali granites and syenites of Kerala as imprints of taphrogenic magmatism in the South Indian shield [PDF]

Granite and syenite plutons with alkaline affinities ranging in age from 550 to 750 Ma sporadically puncture the Precambrian granulites of the Kerala region.
Drury, S. A., Iyer, S. S., Santosh, M.
core   +1 more source

Linking mineral chemistry and radiological risk in rare-metal-bearing monzogranite in Egypt. [PDF]

Sci Rep
Ghoneim MM.
europepmc   +1 more source

Microbial bioleaching of rare earth elements from phosphate minerals: a biotechnology-driven systematic review of mechanisms, bioprocess determinants, and opportunities for sustainable recovery. [PDF]

BMC Biotechnol
Vijayarathna SP, Rathnayake IVN, Samarasekere PW.   +2 more
europepmc   +1 more source

Comprehensive characterization and extraction implications of ion adsorption rare earth deposit from a South American source. [PDF]

Sci Rep
Cunningham S, Grammatikopoulos T, Almusned B, Henderson JD, Azimi G.   +4 more
europepmc   +1 more source

Co-generation of NaREE(MoO4)2 and REEPO4 in multiple habits by solid-flux crystal growth. [PDF]

PLoS One
Balta JB, Holycross ME, Barstow B, Gazel E.   +3 more
europepmc   +1 more source