Annals of the Geological Survey of Egypt, Volume 30Egyptian Geological Survey and Mining Authority., 2008 - Geology |
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Page 153
... albite lath - shaped inclusions developing snow ball - like texture ( Fig . 3b ) . The groundmass comprises interlocking fine - grained quartz , microcline and albite laths ( Fig . 3c ) . Zircon is the most common and abundant accessory ...
... albite lath - shaped inclusions developing snow ball - like texture ( Fig . 3b ) . The groundmass comprises interlocking fine - grained quartz , microcline and albite laths ( Fig . 3c ) . Zircon is the most common and abundant accessory ...
Page 163
... albite granites , petrographic observations show that their textures and mineralogy are magmatic ( euhedral albite laths aligned along growth planes of quartz and K - feldspar ) , which indicate that albite in the albite granite was an ...
... albite granites , petrographic observations show that their textures and mineralogy are magmatic ( euhedral albite laths aligned along growth planes of quartz and K - feldspar ) , which indicate that albite in the albite granite was an ...
Page 165
... albite granite . Niobium is nearly ten times more abundant than Ta in all varieties . The average concentration of hafnium in the Dubbagh alkali feldspar granite and the Ghurayyah albite granite is 13 and 315 ppm , respectively ( Table ...
... albite granite . Niobium is nearly ten times more abundant than Ta in all varieties . The average concentration of hafnium in the Dubbagh alkali feldspar granite and the Ghurayyah albite granite is 13 and 315 ppm , respectively ( Table ...
Contents
1Makhlouf A Beniamin N Y Mansour M M Mansour S | 1 |
2Ali Khaled Gamal Gaafar Ibrahim Mohamed And Ibrahim | 21 |
3El Bahariya G A Abu Anbar M M And El Galy M | 43 |
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albite albite granite allanite alluvial analysis aquifer average basement rocks Basin biotite Botros Cairo Central Eastern Desert chalcopyrite chlorite copper crystals deformation deposits depth Desert of Egypt diagram diorite Dokhan Volcanics Dubbagh dykes earthquake Eastern Desert Egypt Egyptian El-Shab area episyenite euhedral extensional faults feldspar fractures Gabal geochemical Geol Geologic map Ghurayyah gneiss grains granites granitic rocks granitoids granodiorite groundwater hornblende host rocks hydrothermal Khashm El Fakh Kiseiba Laboun layer liquefaction magma mainly mg/l monzogranites NE-SW Nummulites NW-SE occurs Ohm.m ophiolitic Ordovician oxides Paleozoic petrographical plagioclase pluton Precambrian pyrite quadrangle quartz quartz veins Qusaiba Formation ranges ratio Red Sea represented salinity Samadi samarskite samples Samra Saudi Arabia sediments Semna sericite Shab shale Sharawra shear zone shows Sidri silicification Silurian Sinai SiO2 South structural studied granites study area Suez Sukkari sulphide surface Table Tabuk Taref tectonic thickness trend uranium values Wadi Baba younger granites zircon