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Xenotime - Wikipedia

Xenotime is a rare-earth phosphate mineral, the major component of which is yttrium . The lanthanide content is typical of "yttrium earth" minerals and runs about two-thirds yttrium, with the remainder being mostly the heavy lanthanides, where.

Xenotime: The mineral xenotime information and pictures

Detailed description, properties, and locality information guide about the mineral xenotime.

Apatite, monazite, and xenotime in metamorphic rocks - Earth and .

metamorphic rocks: apatite, monazite, and xenotime, and this chapter is restricted to ... higher in Th but the opposite (low-Th rims) was also observed.

Mineralogy_and-Rare Earth Geochemistry of Apatite and Xenotime .

of the light REE relative to the heavy REE, from the center towards the rim of the cryslal. Xenotime crystals included in apatite from the outer zones show less relative enrichment in the light REE than do those in ... (run)r.o+el. (ca'Rxx)5.ozT4.

Accessory mineral petrochronology reveals 30 m.y. of partial melting .

Dec 20, 2018 . (A) Map of the Mataketake Range with sample locations from this study and previous studies indicated. Metamorphic isograds are based on the.

Mineral separations handbook

Jan 12, 2016 . . the sample with coarse (60 to 100 grit) silicon carbide paper or grit on a steel wheel. . The jaw crusher is first cleaned by rubbing the plates with a coarse grit SiC ... Target minerals like xenotime and monazite have moderate .. When all the heavy grains are in the filter paper, let the pump run for a little.

SHRIMP U-Pb and REE data pertaining to the origins of xenotime in .

Apr 14, 2015 . Standard mineral separation techniques include crushing, . standard FC-1 (1099 Ma; Paces and Miller, 1993) was run occasionally and always ... SHRIMP dating of monazite rims yielded ages of 111 ± 1 and 107 ± 2 Ma,.

phase developments between xenotime (ypo4) refractory . - AURA

A xenotime sample was prepared initially by jaw crushing the sample in a Retsch model BB200 . PSD for xenotime sample, second run. ... grinding wheel.

Xenotime-(Y): Mineral information, data and localities. - Mindat

Xenotime-(Y) was found by the Norwegian mineralogist Nils Otto Tank (1800-1864) and first described by the Swedish chemist Jøns Jacob Berzelius in 1824 as.

New Perspectives on the Bishop Tuff from Zircon Textures, Ages and .

Apr 4, 2017 . using the weighted mean of 166 rim ages of 766·6 Ж3·1ka (95% confidence) is ... remove lithic fragments) before crushing for zircon extraction. Fig. 3. . and six scans were run through the mass sequence. The concentration .. follow the 'xenotime substitution' mechanism, where the molar ratio (Y юScю.