Results 51 to 60 of about 4,092 (217)

Geochemistry and tectonomagmatic setting of theGharuchah-Sofla intrusions (South Mahabad)‎ [PDF]

پترولوژی, 2018
The Gharuchah-Sofla intrusion from south Mahabad (southeast of West Azerbaijan) consist mostly of granodiorite and tonalite, interspersed with small bodies of quartz diorite, monzogranite, syenogranite, and alkali feldspar granite.
Abdolnaser Fazlnia, Amir Pahnaei
doaj   +1 more source

3D zoning of barium in alkali feldspar

American Mineralogist, 2023
Abstract Interpretation of chemical zoning within igneous minerals is critical to many petrologic studies. Zoning in minerals, however, is commonly observed in thin sections or grain mounts, which are random 2D slices of a 3D system. Use of these 2D sections to infer 3D geometries requires a set of assumptions, often not directly tested,
Jordan Lubbers, Adam Kent, Douglas Meisenheimer, Dorthe Wildenschild   +3 more
openaire   +1 more source

Effectiveness of self‐etching ceramic primer on the bond strength of dental glass ceramics: A systematic review and meta‐analysis of in vitro studies on feldspathic and leucite‐reinforced ceramics

Journal of Prosthodontics, EarlyView.
Abstract Purpose This systematic review and meta‐analysis evaluated the bond strength effectiveness of a self‐etching ceramic primer, specifically Monobond Etch & Prime (MEP), compared to hydrofluoric acid with silane (HF+S) in feldspathic and leucite‐reinforced dental glass‐ceramics (DGCs). Materials and Methods This study followed PRISMA‐p guidelines
Nathalya Fedechen Martins, Isaac Augusto Dantas Nogueira, Francisbênia Alves Silvestre, Nicole Escórcio de Meneses, Rebeka Thiara Nascimento dos Santos, Raniel Fernandes Peixoto   +5 more
wiley   +1 more source

Supplementary data for the manuscript "Effect of chemically induced fracturing on the ice nucleation activity of alkali feldspar" by Kiselev et al., ACP 2021

, 2023
Feldspar is an important constituent of airborne mineral dust. Some alkali feldspars exhibit particularly high ice nucleation (IN) activity. This has been related to structural similarities of the ice (10-10) prism planes and the (100) planes of alkali ...
Kiselev, Alexei
core   +1 more source

Mid-infrared spectroscopy of alkali feldspar samples for space application [PDF]

, 2020
Feldspars are major components of terrestrial planetary surfaces. For future space application and the setup of a comprehensive reference database, Na- and K-rich alkali feldspars, NaAlSi3O8 – KAlSi3O8, have been investigated by infrared reflectance ...
Jörn Helbert, Morlok, Andreas, Reitze, Maximilian Paul, Herbert Kroll, Hiesinger, Harald, Helbert, Jörn, Reitze, Maximilian P., Harald Hiesinger, Maximilian P. Reitze, Iris Weber, Weber, Iris, Morlok, A., Kroll, Herbert, Andreas Morlok   +13 more
core   +2 more sources

Nb-Zr enrichment in Jabal Al Bayda A-type granites, western Arabian Shield, Saudi Arabia: interplay of magmatic and hydrothermal processes

Journal of Taibah University for Science, 2022
Al Bayda’s younger granitic pluton located within the western Arabian Shield, Al Madinah area, KSA, has been studied using collaborative techniques. The collected samples were studied petrographically using a polarizing microscope and geochemically using
Sayed Mohamed Sakr, Abdullah Omar Bamousa, Ahmed Gad   +2 more
doaj   +1 more source

Vertical profiling of shock attenuation at the Rochechouart impact structure, France

Meteoritics &Planetary Science, EarlyView.
Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska, S. Alwmark, C. Alwmark, M. H. Poelchau, P. Lambert   +4 more
wiley   +1 more source

Microstructures in Two Alkali Feldspar Megacrysts from the Papuk Mt., Croatia

Geologia Croatica, 2004
Two types of megacrysts, one from Pakra Creek and the other from the Sloboština Creek locality proved to be low microcline in associationwith low albite and quartz.
Viktoria Kovacs Kis, Marija Horvat, Istvan Dodony   +2 more
doaj   +1 more source

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Routine characterization and interpretation of complex alkali feldspar intergrowths [PDF]

, 2015
Almost all alkali feldspar crystals contain a rich inventory of exsolution, twin, and domain microtextures that form subsequent to crystal growth and provide a record of the thermal history of the crystal and often of its involvement in replacement ...
Parsons, Ian, Lee, Martin R., Fitz Gerald, John D.   +2 more
core   +1 more source