Dear Mr. Singh,

it depends on your goal of studies. Investigations concerning disequilibria or age dating will need a different notation from studies of, e.g., radium-bearing barite, which is a rare but not uncommon constituent. See for example:

CARL, C. and DILL, H.G. (1983) Uranium disequilibria and modern redistribution phenomena in alteration zones in the Höhensteinweg uranium occurrence. - Uranium, 1: 113-125.

CARL, C. and DILL, H.G. (1985) Age of secondary uranium mineralization in the basement rocks of northeastern Bavaria, F.R.G..- Chemical Geology, 52: 295-316.

The decay chains of U and Th offer a lot of daughter isotopes, useful for applied and genetic geosciences, alike.

Best regards

Harald G. Dill