Results 71 to 80 of about 370 (183)

Application Progress on Transmission Electron Microscopy in the Research of Rare Earth Deposits

Yankuang ceshi
Transmission electron microscopy (TEM), having a remarkably high spatial resolution and diversified analysis capability, can be used to obtain very comprehensive composition, structure, and crystal chemistry of the samples under submicron-nanometer scale
Yitong XU, Wenlei SONG, Jingjing DAI, Shanna XUE, Qian CHEN, Jinkun YANG, Danni XU   +6 more
doaj   +1 more source

Tourmaline ⁴⁰Ar/³⁹Ar chronology of tourmaline-rich rocks from Central Iberia dates the main Variscan deformation phases

Geologica Acta, 2009
During crustal thickening, metapelites taken to depth release boron-bearing hydrothermal fluids because of progressive heating and dehydration. These fluids swiftly percolate upwards, especially if the crust is being actively deformed, to form tourmaline
F. BEA, A. PESQUERA PÉREZ, P. GONZÁLEZ MONTERO, J. TORRES RUIZ, P.P. GIL CRESPO   +4 more
doaj  

Mineral chemistry of monazite-(Nd), xenotime-(Y), apatite, fluorite and zircon hosting in lamprophyre dyke in Abu Rusheid area, South Eastern Desert, Egypt

Geologija, 2012
The studied mineralized lamprophyre dyke in Abu Rusheid area is trending NNW-SSE, and occurs withinAbu Rusheid mineralized shear zone, measuring 0.2 - 1.0 m in width and 0.5 - 1.0 km in length. It was emplacedparallel with the Abu Rusheid shear zone. The
Mohamed A. Ali
doaj  

Geochemistry of Precordillera serpentinites, western Argentina: evidence for multistage hydrothermal alteration and tectonic implications for the Neoproterozoic–early Paleozoic

Geologica Acta, 2015
Serpentinites are a powerful tool to evaluate mantle composition and subsequent alteration processes during their tectonic emplacement. Exposures of this type of rocks can be found in the Argentine Precordillera (Cuyania terrane) and Frontal Cordillera ...
F.L. BOEDO, M.P ESCAYOLA, S. PÉREZ LUJÁN, G. VUJOVICH, J. P. ARIZA, M. NAIPAUER   +5 more
doaj  

The geological relationship between Kanmantoo Cu-Au deposit mineralisation, hydrothermal metasomatism and igneous intrusives

, 2018
B. J. Kimpton
openalex   +2 more sources

Peridotite-hosted hydrothermal systems past and present: serpentinization, metasomatism and carbonate precipitation in modern and jurassic ultramafic seafloor

, 2016
Monica Vogel
openalex   +2 more sources

Impact-generated hydrothermal circulation and metasomatism of the rochechouart astrobleme: mineralogy and major and trace element distribution [PDF]

, 2014
Sarah Simpson, Martin Lee, P. Lindgren
openalex  

Genetic implications of Th/U, Th/K, and U/K ratios for U mineralizations: A case study from El-Missikat and El-Erediya shear zones, Eastern Desert, Egypt. [PDF]

Geochem Trans, 2023
Abdel-Hakeem M, El-Tahir M, Zeid EA, Rageh H.   +3 more
europepmc   +1 more source

Diamond preservation in the lithospheric mantle recorded by olivine in kimberlites. [PDF]

Nat Commun, 2023
Giuliani A, Phillips D, Pearson DG, Sarkar S, Müller AA, Weiss Y, Preston R, Seller M, Spetsius Z.   +8 more
europepmc   +1 more source

Petrographic and geochemical evidence from pyrite for the genesis of the Bainiuchang Ag-polymetallic deposit southeastern Yunnan. [PDF]

Sci Rep
Wang T, Liu X, Zhang S, Lu B, Chen S, Meng G, Zhang H, Chen X, Zhou J, Mi X, Shi N, Xiao K.   +11 more
europepmc   +1 more source