Here's some picture from their web.
Can't believed their process actually look like as if they are baking a cake....
As quoted from the News here:
The process of making M.A.C Mineralize Powders is pretty tedious. Beginning as a dough containing a special blend of 77 minerals, most of it is done manually, as was demonstrated at the workshop.
With the precision of a fine artisan and eyes peeled on the task at hand, the young woman entrusted with giving the demo measured and scraped just the right amounts of pink and gold-coloured dough before moulding them onto tiny custom-made terracotta tiles and baking them between 24 and 48 hours in a special oven.
Their short video clip which I find it abit hideous to look at. -_-
Go watch them before they take off from their website. :)