On the Study of the Uptake of Strontium Tracer by Different forms of Calcium-Sulphate.

Distribution study with different morphological forms of Calcium sulphate as host and strontium tracer as runt is tho subject matter of study. It has been found this strontium tracer is taken by gypsum through mired crystal formation. This gives a strong support to the claim of Lambert and Hume-Rothary as regards the existence of gypsum analogue of strontium caliphate.

It has been found that anhydrite takes up strontium tracer through mixed crystal formation. Both heterogeneous and homogeneous distribution factors some out constant under various experimental condi­tions. The partition factor in this case is much below unity and it is nearly independent of temperature and concentration of the guest component. It has been argued that this low partition value in case of anhydrite gives an explanation why Sr:Ca ratio is higher in sea than it is on land.