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Kahoui, Mohammed
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Kahoui, Mohammed
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- PublicationRestrictedTH, U, REE MINERALS IN THE GARA ADJEMAMAYE PERALKALINE GRANITE (CENTRAL HOGGAR, ALGERIA)(2011)
; ; ; ; ; ; ;KAHOUI, Mohammed; USTHB, FSTGAT, Dept of Geology, Bab Ezzouar-El Alia, ALGIERS ;DELLA VENTURA, Giancarlo; Dipartimento Scienze Geologiche,Università di Roma Tre, ROMA ;MAHDJOUB, Yamina; USTHB, FSTGAT, Dept of Geology, Bab Ezzouar-El Alia, ALGIERS ;BELLATRECCIA, Fabio; Dipartimento Scienze Geologiche,Università di Roma Tre, ROMA ;Cavallo, Andrea; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia ;LOUNI, Chahira; USTHB, FSTGAT, Dept of Geology, Bab Ezzouar-El Alia, ALGIERS; ; ; ; ; The Gara Adjemamaye peralkaline granite outcrops in the Egere-Aleksod terrane (central Hoggar). The main facies is a grey to cream heterogranular rock composed of quartz, mesoperthite, sodi-calcic amphibole, sodic pyroxene, annitic biotite, opaques, Fe-Ti oxides, zircon and abundant (Th, U, REE) bearing minerals. The latter are often finely dispersed in veins crossing the rock, suggesting crystallization due to extensive late-stage remobilization. This work represents a contribution to the crystal-chemistry of these rare minerals and the metasomatic mobility of incompatible elements such as Ti, Zr and REE in igneous environments.171 8