maybe U content of zircon (in granites) can separate them into hot or cold ones

Dear Mr. Ahmad,

I must confess it is a long time ago when I was involved in U exploration and the projects dealing with the genesis of U deposits, that "hot granites" were a hot topic and papers were published on this theory of heat-producing granites which were rife with disseminated U ore minerals. There were also lots of theories and calculations on heat transfer, convective circulation and the origin of granite-related and granite-induced U deposits in the immediate surroundings of these granites, mainly in Europe. I published a paper then in a large conference volume with many more papers focusing on these theories.

DILL, H. G. (1985) Granite-related and granite-induced ore mineralization from the Western edge of the Bohemian Massif. - "Heat producing granites", St. Austell, Great Britain

Unfortunately, I lost connection with this theory through time as I moved out of this study of U deposits and directed my thoughts to different projects.

Maybe this hint helps you to get a rapid introduction into cold and hot granites

Regards

H.G.Dill

Dear Dr. Dill

http://www.hgeodill.de/Publikationsliste-01.06.2010.htm

Above link contained only references, if possible please share the paper with thanks.

Regards

Ijaz

Dear Mr. Ahmad,

in addition to the paper of mine I also recommend the remaining contributions to the topic "hot granites" published in this volume (I also quoted some papers). Unfortunately, I cleared my shelves some years ago and no longer avail myself of the complete book.

You should pay attention to the various types of minerals in the granites under consideration which contain U, Th and K and view them also as to the stability of these minerals in hydrothermal regimes. Are they refractory or not ?

I hope it will help you.

With kind regards

H.G.Dill

I recommend Harald's answer

Best Regards

post-tectonic granites, rich in accessory minerals that may contain uranium; it is apatite, allanite, sphene and zircon. . The percolation of the solutions in the basement has led to a mineralogical and geochemical evolution of the rocks in several successive stages. Elemental exchanges between the solutions and the basement rocks during the progression of the alteration favored the transformation of the initial sodium solution into a uranium-enriched calcium solution essentially required for the formation of the discordant-type deposits.

Hydrocarbons, Energies and Environment (HCEE) Ouargla in November the 23rd and 24th 2014

Presentation orale :OULD HAMOU A.

(Les granites post tectoniques Pan Africains : source potentielle des minéralisations radioactives dans le profil d'altération Bassin de Tin Seririne Oua n Ahaggar Hoggar Algérie ).