HYDROTHERMAL ZIRCON, NB-TA AND REE MINERALIZATION IN RADIOACTIVE PEGMATITE-APLITE DYKES, NORTH RAS MOHMMED AREA, SOUTH SINAI, EGYPT
نویسندگان
چکیده
منابع مشابه
Zr-Y-Nb-REE mineralization associated with microgranite and basic dykes at EL Sela shear zone, South Eastern Desert, Egypt
El Sela shear zone occurs in the younger granite rock of Gabal El Sela area, south Eastern Desert, Egypt near the Sudan Frontier. It comprises lines-arranged intrusions trending ENE-WSW and extend for about 1.5 km in length and reach up to 40 meters in width. These lines-arranged intrusions include multi-phase quartz veins, altered microgranite and altered basic dykes. These dykes hosting or ac...
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Dark brown porous ferrotapiolite is a dominant product of alteration in pseudomorphs after primary stibiotantalite from the lepidolite pegmatite at Laštovičky, western Moravia, Czech Republic. Two compositionally distinct varieties of ferrotapiolite were recognized, a volumetrically dominant Fe3+-rich phase and a very rare Sb-rich phase. Niobium-rich ferrotapiolite, with up to 17.51 wt.% Nb2O5 ...
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ژورنال
عنوان ژورنال: Delta Journal of Science
سال: 2007
ISSN: 2735-5306
DOI: 10.21608/djs.2007.152993