Here is one of the newest discoveries from China, which first showed up at the 2015 Tucson Show.  This extraordinary specimen features a jumbled mass of large pyromorphite crystals (to 1") which been replaced in the outer layer with turquoise blue plumbogummite, a rare lead phosphate.  The centers of the crystals are still green, indicating the pyromorphite was only partly pseudomorphed.  This would be a superb pyromorphite specimen without the replacement, but is even more valuable and desirable as a pseudo.