Results 21 to 30 of about 10,226 (223)

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

open access: yes, 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 ...
Fitz Gerald, John D.   +2 more
core   +1 more source

INVESTIGATION OF FELDSPAR RAW MATERIAL POTENTIAL OF ALKALI FELDSPAR GRANITES AND ALKALI FELDSPAR SYENITES WITHIN CENTRAL ANATOLIA

open access: yesBulletin Of The Mineral Research and Exploration, 2018
Alkali feldispat granitler fazla oranda feldispat ve kuvars icermeleri nedeniyle cam ve seramik sanayisine hammadde saglayan baslica kaynaklardandir. Granit kayalarinin yani sira alkali feldispat siyenit kayalari da yuksek orandaki feldispat ve feldispatoyid icerikleriyle hammadde olma potansiyeline sahiptirler.
DENİZ, Kıymet, KADIOĞLU, Yusuf Kağan
openaire   +3 more sources

LA-ICP-MS Zircon U-Pb Dating of Alkali-Feldspar Granites from the Dawan Mo-Be Deposit, Xiapu, Fujian Province

open access: yesYankuang ceshi, 2018
BACKGROUND The Mo-Be deposit in Xiapu Dawan, Fujian Province is located in a volcanic rock area. Mineralization may be closely related to magmatic activity and fracture structure.
HUANG Xin-peng
doaj   +1 more source

A more informative way to name plutonic rocks — comment by Frost et al. [PDF]

open access: yes, 2019
Published ...
Anderson, J. Lawford   +4 more
core   +1 more source

The Shahewan rapakivi-textured granite-quartz monzonite pluton, Qinling orogen, central China: Mineral composition and petrogenetic significance [PDF]

open access: yesBulletin of the Geological Society of Finland, 2002
The Mesozoic Shahewan pluton consists of four texturally different types of biotite-hornblende quartz monzonite. In the porphyritic types alkali feldspar occurs as euhedral or ovoidal megacrysts that are often mantled by one or more plagioclase shells ...
X. Wang, T. Wang, I. Haapala, X. Lu
doaj   +1 more source

Relationship between Degree of Deformation in Quartz and Silica Dissolution for the Development of Alkali-Silica Reaction in Concrete. [PDF]

open access: yes, 2017
This paper presents research on the influence of quartz deformation in aggregates for the development of the alkali-silica reaction in concrete and its relationship with silica dissolution.
Dal Molin, Denise   +4 more
core   +1 more source

Petrography, Geochemistry and Tectonic Setting of the Harris Granite Body, Located in Mishu Mountains, Northwest of Iran (Shabestar City) [PDF]

open access: yesپترولوژی, 2021
The Harris granitoid body, as a part of Alborz-Azarbaijan zone, located in the northwestern Iran and west of Shabestar city. The intrusive body cut the Kahar formation and covered by non-conformably Permian sediments. This body is granite- alkali granite
Farhad Pirmohammadi Alishah
doaj   +1 more source

Observation of centimetre-scale argon diffusion in alkali feldspars: implications for 40Ar/39Ar thermochronology [PDF]

open access: yes, 2013
New data from a gem-quality feldspar from Itrongay, Madagascar, record naturally occurring 40Ar/39Ar age profiles which can be numerically modelled by invoking a single diffusion mechanism and show that microtexturally simple crystals are capable of ...
Flude, Stephanie   +5 more
core   +3 more sources

ASTER VNIR‐SWIR Based Lithological Mapping of Granitoids in the Western Junggar Orogen (NW Xinjiang): Improved Inputs to Random Forest Method

open access: yesEarth and Space Science, 2023
Although advanced spaceborne thermal emission and reflection radiometer multispectral analysis for lithological mapping has been widely applied, traditional methods such as band ratios (BR) and principal component analysis (PCA) are still hampered by ...
Yarong Zhou   +3 more
doaj   +1 more source

Melt-melt immiscibility and implications for the origin of Madeira albite-rich granite, Pitinga mine, Amazonas, Brazil: A melt inclusion study

open access: yesBrazilian Journal of Geology, 2022
Presented here are the results of the first studies of silicate melt inclusions hosted in quartz crystals from the two late granitic facies of the Paleoproterozoic Madeira pluton in the Pitinga mine, State of Amazonas, Brazil. The study of these magmatic
Régis Munhoz Krás Borges   +7 more
doaj   +1 more source

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