Results 31 to 40 of about 370 (183)

Three Spodumene Reference Materials for Oxygen Isotope Measurement by Ion Microprobe

Geostandards and Geoanalytical Research, Volume 49, Issue 4, Page 857-869, December 2025.
Key Points Three spodumene reference materials were developed for SIMS oxygen isotope measurement. All three materials are homogeneous in oxygen isotopes. Crystal orientation has no effect on instrumental mass fractionation. This study reports on the development of three spodumene reference materials referred to as Curtin University (CU) Tri‐1, Kun‐A‐1
Andreas T. Hertwig, Johannes Chischi, Axel K. Schmitt, Hans C. Oskierski, Kai Rankenburg, Martin Wells, Benita Putlitz, Zakaria Quadir   +7 more
wiley   +1 more source

Research advances on rare metal pegmatite deposits

地质科技通报, 2021
The pegmatite deposit is one of the most important types of rare metal deposits in the world, and it is also one of the most popular interests in the international deposit research.Significant advances have been made in the latest decades, including the ...
Zilong Ran, Yanjun Li
doaj   +1 more source

The Qingzhen reaction, a fine‐grained mineral assemblage associated with djerfisherite in some EH3 chondrites: Alteration on the EH parent body

Meteoritics &Planetary Science, Volume 60, Issue 12, Page 2913-2934, December 2025.
Abstract Enstatite chondrites formed under extremely reducing conditions in the protoplanetary disk. They are derived from two or more parent bodies, EH and EL, and both EH and EL groups contain petrologic type 3–6 samples. The rare lithophile‐ and halogen‐bearing sulfide, djerfisherite, occurs in low abundance in enstatite chondrites, most frequently ...
Peter Mc Ardle, Rhian H. Jones, Luke Daly, Romain Tartèse, Patricia L. Clay, Brian O'Driscoll, Ray Burgess, William Smith, Colin How, Lewis Hughes   +9 more
wiley   +1 more source

Major, Trace, and Rare-Earth Element Geochemistry of Nb-V Rich Andradite-Schorlomite-Morimotoite Garnet from Ambadungar-Saidivasan Alkaline Carbonatite Complex, India: Implication for the Role of Hydrothermal Fluid-Induced Metasomatism [PDF]

, 2021
Amiya K. Samal, Rajesh K. Srivastava, Dewashish Upadhyay   +2 more
openalex   +1 more source

Petrography of phosphates in CI and CY carbonaceous chondrites

Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2594-2622, November 2025.
Abstract Phosphate minerals are significant carriers of volatiles (e.g., OH) and halogens in chondritic material; however, their origin in most groups of carbonaceous chondrites remains poorly characterized. We have determined the abundance, morphology, texture, and composition of phosphate grains in aqueously altered CI chondrites and in hydrated and ...
C. S. Harrison, A. J. King, R. H. Jones, L. Piani   +3 more
wiley   +1 more source

K‐Metasomatic Weakening of Oceanic Crust at Shallow Subduction Depths: Evidence From the Rodeo Cove Thrust Zone, Marin Headlands, California

Geochemistry, Geophysics, Geosystems
Studies of exhumed subduction shear zones indicate that metamorphism and metasomatism of the oceanic lithosphere influence the composition, structure, and rheology of megathrust faults, particularly deep along the plate boundary (>30 km).
Benjamin D. Belzer, Melodie E. French, Noah J. Phillips   +2 more
doaj   +1 more source

Multi-Scale Geophysics and Chemistry-Based Investigation of Alteration Evolution Mechanisms in Buried Hills of the Northern South China Sea

Journal of Marine Science and Engineering
Alteration is a common metamorphic process in igneous formations and recorded geological information in different times and spaces. Owing to its unique location, the igneous rocks of the buried hills in the northern South China Sea exhibit complex ...
Xinru Wang, Baozhi Pan, Yuhang Guo, Julin Zhang, Xun Yu, Pengji Zhang   +5 more
doaj   +1 more source

Precambrian Greenstone Belts of North Baffin Island, Canadian Arctic: Geochronological Constraints on Magmatism and Stratigraphy in the Rae Craton

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.
Abstract Supracrustal greenstone belts of the Rae craton of north Baffin Island have been historically attributed to the Mary River Group (MRG), a key tectonostratigraphic unit of economic significance. Best‐preserved exposures of supracrustal rocks occur within the Eqe Bay Greenstone Belt.
B. M. Saumur, C.‐P. Folkesson, D. R. Skipton, J. H. F. L. Davies, N. Wodicka, S. T. Johnston   +5 more
wiley   +1 more source

Metasomatism and Mélange Development at the Conditions of Modern Deep Slow Slip: P‐T‐t Evolution of Metasomatic Rocks (Pimu'nga/Santa Catalina Island, CA)

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.
Abstract The subduction interface hosts megathrust earthquakes and ductile creep, is fluid‐rich and chemically dynamic, and produces metasomatic rocks that may host episodic tremor and slow slip (ETS). However, determining the depths at which these metasomatic rocks form and deform remains challenging.
W. Hoover, C. B. Condit, A. Moser, S. Mulcahy, P. C. Lindquist, V. E. Guevara   +5 more
wiley   +1 more source

On the Origin of Fe-Ca Metasomatism in Ultramafic-Hosted Hydrothermal Mineralized Systems: Insights from the Platta Nappe (Swiss Alps)

, 2023
Rémi Coltat, Clifford Patten, Flora Hochscheid, Yannick Branquet, Marc Ulrich, Philippe Boulvais   +5 more
openalex   +2 more sources