Browsing by Author "Al Mohandis, Ahmed A. [احمد عبد القادر المهندس]"

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    • Distribution And Mineralogy Of The Clay Deposits In Saudi Arabia 

      Al Mohandis, Ahmed A. [احمد عبد القادر المهندس] ( Qatar University , 1993 , Article)
      The main goal of this paper is to characterize the mineral clay deposits in Saudi Arabia; especially their mineral composition, deposit size, geological setting and possible uses. Different published reports and papers on ...

    • Mineralogy and Chemistry of Desert Roses, Ayn Dar Area, Abqaiq, Eastern Province, Saudi Arabia 

      Al Mohandis, Ahmed A. [احمد عبد القادر المهندس] ( Qatar University , 2002 , Article)
      Desert roses are crystals which usually take the form of rose petal. They have definite crystal shapes, and enclose sand grains. The desert roses were scattered along an area of about 500m2 in the Ayn Dar area, near Abqaiq, ...

    • Whole-rock powders and their analysis by an electron mocroprobe technique 

      Al Mohandis, Ahmed A. [احمد عبد القادر المهندس] ( Qatar University , 2001 , Article)
      Basic rock powders finder than 100 mesh were fushed in a molybdenum and tungsten boat in nitrogen atmosphere. The fusion technique uses very small amounts of sample which is suitable for rapid analysisof rock sample, ...

    • X-Ray And Electron Microprobe Analysis Of Some Plagioclases From The Jabal Abu Safiyah Intrusion 

      Al Mohandis, Ahmed A. [احمد عبد القادر المهندس] ( Qatar University , 1992 , Article)
      The Jabal Abu Safiyah is a layered intrusion, which was emplaced within volcanosedimentary rocks. It extends in an arc for about 15 km and displays clear layering. The lower zone plagioclases were studied by electron ...