Dear Mr. Balaji,

barium is primarily controlled in marine environments by magmatic processes, being, in places, instrumental for the emplacement of Kuroko-type (VMS) and Rammelsbergy-type (SMS) base metal mineralization, dependant upon the geodynamic setting. It goes  along with the precipiation of baryte. Ba can substitute for K in all K-bearing silicates and as such increases along with the detrital input into the basin. Gallium can replace to some degree aluminium in its host minerals and as such will also act as a marker of the detrital input.

Best regards

H.G.Dill

Dear D Balaji.

I am agree with prof Harald toward of Ba was originated from Baryte. But when talking on Ga, its seen even closely nature to Al, but the amount was tiny if compared to Al. And Ga much sensitively to temperature and pH changing in marine sediment or estuarine. Where some studies show the Ga could evaporated during digestion in low temperature at 20-30< degree and contradict to Al. Very interested research cuased not many scientists did.

Good Luck

Regard's

Zolhizir bin Daud

Thanks Zolhizir and Prof. Herald.