Can you give more information by email please.

Martin feely

I am so thankful to you Prof. Feely.

I am presenting here little more elaborate descriptions about the pluton

The granitoid pluton identified to be potential for hosting porphyry Cu is mainly based on the following: i) mostly pinkish grey coloured, fine grained porphyritic granitoids with compositional variants like granodiorite to quartz monzonite.

ii) hypogene alteration mineralogy- systematic development of potassic, phyllic, argillic alteration zones

iii) 87 Sr/ 86 Sr offers an initial mantle ratio of 0.7025 and 34S/32S ratio +4.5+0.05 per mil

iv) Calc-alkaline,  I and A-type granitoid, strongly oxidised, moderately evolved, anorogenic but mantle derived granitoid.

v) negative  Eu anomaly - moderate to low.

There are other features that helps me to model the occurrence as a potential one.

As my work needs to see the oxygen isotope profile and depth of occurrence through fluid inclusion parameters if necessary economic concentration is met wth at depth.

Hope this will help you why I presume it to be a productive granitoid hosting porphyry style mineralization.

Thanks with all regards

Dilip Majumdar

Dibrugarh University, NE India

The technology shown by Clayton & Mayeda appears to be reliable although I have not yet tested. Reaction to extract oxygen from silicates is shown as :

                KAlSi3O8 + 8BrF5   =  KF + AlF3 +  3SiF4 + 402 + 8BrF3  

• Once the oxygen is extracted then Mass-spetrometer can find out the ratio of isotopes.

Hope you can use the technology and get your results.

"The use of bromine pentafluoride in the extraction of oxygen from oxides and silic

ates for isotopic analysis*  by ROBERTN.CLAYTON  and  TOSHIKO K.MAYEDA"