Results 11 to 20 of about 4,092 (217)

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   +4 more sources

Crystallization Kinetics of Alkali Feldspar in Peralkaline Rhyolitic Melts: Implications for Pantelleria Volcano [PDF]

open access: yesFrontiers in Earth Science, 2020
Peralkaline rhyolites, associated with extensional tectonic settings, are medium to low viscosity magmas that often produce eruptive styles ranging from effusive to highly explosive eruptions.
Fabio Arzilli   +6 more
doaj   +3 more sources

Spinodal decomposition in alkali feldspar studied by atom probe tomography. [PDF]

open access: yesPhys Chem Miner, 2020
: We used atom probe tomography to complement electron microscopy for the investigation of spinodal decomposition in alkali feldspar. To this end, gem-quality alkali feldspar of intermediate composition with a mole fraction of a(K) = 0.43 of the K end ...
Petrishcheva E   +6 more
europepmc   +2 more sources

Coherent solvus of disordered alkali feldspar: experiment, atom probe tomography and thermodynamic model. [PDF]

open access: yesContrib Mineral Petrol
<jats:title>Abstract</jats:title><jats:p>At temperatures above about 600 °C, alkali feldspar forms a continuous solid solution between the Na and K end members.
Heuser D   +8 more
europepmc   +2 more sources

PETROLOGY AND URANIUM DISTRIBUTION IN THE YOUNGER GRANITES OF GABAL ABU DIAB AREA, EASTERN DESERT, EGYPT [PDF]

open access: yesDelta Journal of Science, 2005
The area of Gabal Abu Diab (about 92.5km2) is located between latitudes 25º 11` and 25º 16`N and longitudes 34º 11` and 34º 17` E.  The younger granites of G.
MEDHAT M. EL-MANSI
doaj   +1 more source

GEOLOGY, RADIOACTIVE MINERALOGY AND GEOCHEMISTRY OF THE GRANITEIC ROCKS OF GABAL KHASHM EL-RISHA AREA, NORTH EASTERN DESERT, EGYPT. [PDF]

open access: yesDelta Journal of Science, 2007
The rocks cropping out in the area are older granitoids (quartz diorites and granodiorites), Dokhan volcanic, younger granites (syenogranites and alkali feldspar granites) and dyke swarms of mafic and felsic composition trending mainly in the NESW and NW-
S.S. Farag, A.A. Omran
doaj   +1 more source

Two-stage, U-mineralization of A-type granites from the Huangmeijian complex, eastern China

open access: yesSolid Earth Sciences, 2023
Parts of A-type granites are closely related to some critical mineral resources. The study of origin and geochemical properties of those A-type granites are of great significance in revealing the metallogenic potential. The Early Cretaceous Huangmeijian (
Xiao-Yan Jiang   +4 more
doaj   +1 more source

CONTRIBUTION TO THE GEOLOGY AND RADIOACTIVITY OF THE OLDER GRANITOIDS AND YOUNGER GRANITED OF GABAL EL-URF-GABAL ABU SHIHAT AREA, EASTERN DESERT, EGYPT [PDF]

open access: yesDelta Journal of Science, 2005
The younger granites form an elongated belt following NNE-SSW direction. They intrude the older granitoids with sharp intrusive contacts and carry them as roof pendants. Two varieties of the younger granites are identified.
AHMED M. DARDIER, MEDHAT M. EL-MANSI
doaj   +1 more source

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm   +2 more
wiley  

+1 more source

PETROGENESIS OF SELECTED PEGMATITIC BODIES FROM EASTERN DESERT AND SINAI MASSIF, EGYPT [PDF]

open access: yesDelta Journal of Science, 2005
Selected pegmatitic bodies of simple and complex types (unzoned and zoned) located in the Eastern Desert (ED) and Sinai Massif (SM) have been carefully studied. The simple pegmatites under consideration occur at Wadi Hawashia (northern ED), Gabal El Hudi
E.K. Abu Zeid   +4 more
doaj   +1 more source

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