Here under ''what is xenon" youll find an article explaining how the xenon uses metal salts (mh) also how it achieves its kelvin rating through burn temp like an mh the xenon with the coatings are 12000k and higher ,the 10000k is entirelly burn temp.
I'll find you those stats may take a while though,sad how you think im lying to you....oh well
http://www.delonixradar.com.au/products/hid/xenon.html