This is a very good quality specimen of the remarkably rare iron phosphate featuring a wonderful, sharp, lustrous, gemmy, deep green, layered crystal group of Ludlamite sitting atop brownish Siderite. There have been no more of these specimens found in the last 7 years from this locality, and it is a possibility there will never be any more. Fine quality Ludlamite specimens are only known from a handful of localities worldwide, and the best specimens from Huanuni are certainly some of the finest extant.