Results 81 to 90 of about 4,888 (235)
Cation ordering over short range and long range scales in the MgAl2O4-CuAl2O4 series [PDF]
, 2012 A multi-analytical approach using electron microprobe analysis, X‑ray structural refinement, and optical absorption spectroscopy was applied to characterize short-range and long-range structures of synthetic spinel single crystals along the MgAl2O4 ...
Bosi, F. +3 more
core +1 more source
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.Abstract Mafic eclogites of the Tauern Window in the Eastern Alps preserve vein networks associated with eclogite‐facies mineral assemblages. The structural and mineralogical diversity of these veins is encapsulated by Type I veins, which resemble deformed tension gashes, and Type II quartz segregates with non‐planar morphologies. Within host eclogites,
L. A. Strobl +3 more
wiley +1 more source
CONCENTRIC-ZONAL AGGREGATE OF REE MINERALS IN FELDSPAR PEGMATITE OF THE VISHNEVYE MOUNTAINS, SOUTH URALS [PDF]
Минералогия, 2019 A concentric-zonal texture of mineral aggregate observed in alkali pegmatite of the Vishnevye Mountains was formed as a result of melt-fluid crystallization in a closed system.
V.A. Popov
doaj
Journal of Metamorphic Geology, Volume 43, Issue 8, Page 839-862, October 2025.ABSTRACT Understanding how Paleoproterozoic orogenic processes shaped the assembly of Laurentia remains a critical puzzle in deciphering Earth's ancient tectonic history. To address this challenge, the Montana metasedimentary terrane in the northwest Wyoming Province, which preserves a complex record of multiple metamorphic episodes, provides a unique ...
Tsai‐Wei Chen +3 more
wiley +1 more source
Anais da Academia Brasileira de Ciências, 2012 Epidote-group minerals, together with albite, quartz, fluorite, Al-poor and Fe-rich phyllosilicates, zircon, and minor oxides and sulphides, are typical hydrothermal phases in peralkaline alkali-feldspar granites from the Corupá Pluton, Graciosa Province,
Silvio R.F. Vlach
doaj
An Experimental Study of Trace Element Fluxes from Subducted Oceanic Crust [PDF]
, 2017 We have determined experimentally the hydrous phase relations and trace element partitioning behaviour of ocean floor basalt protoliths at pressures and temperatures (3 GPa, 750-1000°C) relevant to melting in subduction zones.
Blundy, J. D. +4 more
core
Transfer of Strontium and Carbon From Subducting Sediment Into the Leading Edge of the Mantle Wedge
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 9, September 2025.Abstract Carbon mobilization at subduction zones can be constrained by focusing on Sr as a proxy, as Sr readily substitutes for Ca—a major cation in the crystal structures of carbonates. Unmelted high/ultrahigh pressure (HP/UHP) pelitic metasediments exhumed from less than 100 km depth along the slab‐mantle interface show loss of Sr and retention of ...
Amol Dayanand Sawant +6 more
wiley +1 more source
U–Pb dating and Sm–Nd isotopic analysis of granitic rocks from the Tiris Complex : new constaints on key events in the evolution of the Reguibat Shield, Mauritania [PDF]
, 2012 The Reguibat Shield of N Mauritania and W Algeria represents the northern exposure of the West African Craton. As with its counterpart in equatorial West Africa, the Leo Shield, it comprises a western Archaean Domain and an eastern Palaeoproterozoic ...
Abdouloye, T.B. +6 more
core +1 more source
REE AND SR MINERALIZATION WITH PERRIERITE-(CE) IN ALKALINE SILICATE-CARBONATE ASSEMBLAGE OF THE CONTACT ZONE OF THE VISHNEVOGORSK BLOCK (SOUTH URALS) [PDF]
Минералогия, 2016 The REE and Sr minerals (perrierite-(Ce), allanite-(Ce), ankilite-(Ce), monazite-(Ce), «cerphosforhuttonite») were identified in the apatite-albite-phlogopite-calcite veins of the contact zone of the Vishnevogorsk miaskite block.
E.P. Makagonov, V.A. Muftakhov
doaj
Acta Carsologica, 2014 The cave deposits from the Mošnica Cave located on the northern slope of the Nízke Tatry Mts. were analysed by sedimentological, petrographical and mineralogical methods.
Katarína Bónová +6 more
doaj +1 more source