A: The chemical composition of each of these minerals is as follows:

Chlorite 1 = Mg5Al2Si3O10(OH)8

Chlorite 2 = Mg6AlSi3O10(OH)8

Chlorite 3 = Fe2.5Mg2.5Al2Si3O10(OH)8

In ioGAS version 4.5, the composition of each of these minerals is displayed when you hover your mouse over the mineral name in the selection window.

Alternatively, to find out what the chemical composition is for these and other minerals displayed in a plot window click on the Show/Hide Mineral Compositions button on the RHS toolbar and it will cycle through displaying abbreviated mineral name, full mineral name and chemical formula for each node.