Hybridization in the subvolcanic Jaala-Iitti complex and its petrogenetic relation to rapakivi granites and associated mafic rocks of southeastern Finland [PDF]
Bulletin of the Geological Society of Finland, 1995 The 1630 Ma Jaala-Iitti complex is an example of bimodal rapakivi granite magmatism in which the interaction of granite and diabase magmas have led locally to hybridization.
P.T. Salonsaari
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The Behavior of Water in Orthoclase Crystal and Its Implications for Feldspar Alteration
Crystals, 2022 The phenomenon of feldspar alteration that occurs in the interior of feldspar crystals remains poorly understood. We observed experimentally that water can go into orthoclase crystals under pressures of up to 600 MPa at room temperature.
Hongyan Zuo, Rui Liu, Anhuai Lu
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Anisotropy of magnetic susceptibility in alkali feldspar and plagioclase [PDF]
, 2016 Feldspars are the most abundant rock-forming minerals in the Earth’s crust, but their magnetic properties have not been rigorously studied. This work focuses on the intrinsic magnetic anisotropy of 31 feldspar samples with various chemical compositions ...
Angel, R. J. +3 more
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MINERALOGY AND RADIOACTIVITY OF EL-ROSIS SHEAR ZONE, SOUTHERN SINI, EGYPT. [PDF]
Delta Journal of Science, 2007 Ei-Rosis area is mainly covered by syeno- and alkali feldspar granites intruded into the granodiorites with sharp contacts. The alkali feldspar granite is dissected by WNW-ESE shear zone along which alteration products such as hematitization and ...
A.H.A. Bishr +3 more
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Petrology and tectono-magmatic setting of Zorrati granitoid, southwest of Birjand (East of Lut block) [PDF]
پترولوژی, 2023 The Zorrati granitoid (ZG) pluton exposed on the eastern edge of the Lut block trending north-south. The Lut block surrounded in the north by the Darone fault, in the south by the Jazmurian fault and in the east and the west by Nahbandan and Naiband ...
Ebadolah Toulabi Nejad +4 more
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Experimental determination of plagioclase dissolution rates as a function of its composition and pH at 22°C. [PDF]
, 2014 The steady-state, far-from-equilibrium dissolution rates of nine distinct plagioclases ranging in composition from An2 to An89 were measured in mixed flow reactors at 22 ± 2 C and pH from 2 to 11.
Gudbrandsson S., Wolff-Boenisch D., Gislason S. R. and Oelkers E. H.
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Evaluation of granitic rocks as feldspar source: Al Madinah, Western Part of Saudi Arabia
Journal of Taibah University for Science, 2018 The source of the feldspar is found in the Late-Precambrian granitoid rocks of Al Madinah area, which covers about 2000 km2 within a 44,000 km2 area of the western part of Saudi Arabia.
Mousa Gougazeh +2 more
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Petrology and mineralogy of the Ulaan Del Zr-Nb-REE deposit, Lake Zone, Western Mongolia
Mongolian Geoscientist, 2020 The Ulaan Del deposit is located in the Lake Zone, Western Mongolia. In the area, middle-late Devonian alkali dykes of the Khalzan Complex are hosted in the middle-late Cambrian granodiorite-tonalite of the Togthohiinshil Complex. The alkali dykes of the
Sanjsuren Oyunbat
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Petrography and petrology of the Ayghalesi granite, east of Takab area (northwest of Iran) [PDF]
پترولوژی, 2017 The investigated granite intrusion is located at the north of Ayghalesi village, east of Takab The Ayghalesi granite has been intruded the Eocene sandstone and conglomerate rocks and low grade metamorphic hornfels have been metamorphosed host rocks.
Saeed Kamran +3 more
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, 2020 This work investigates whether thermal histories of rocks can be reliably reconstructed by interpreting step-heating 40Ar/39Ar analyses of alkali feldspar via multi-diffusion domain (MDD) theory.
Popov, Daniil
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