Pyrite pseudomorph after Pyrrhotite (''roses'')

Item Description

A gorgeous and showy miniature display specimen from Zacatecas, Mexico featuring beautiful metallic golden colored Pyrite which has pseudomorphed after "rose"-shaped groups of what was originally Pyrrhotite with minor Quartz. The largest "rose" measures about 2.0 cm across. No major damage that I can see, and it's so pretty in person. From the collection of William ("Bill") (1927-2006) and Anne (1928-2021) Cook of Cleveland, Ohio (#2133). This husband and wife duo were actively involved in the mineral world for many decades. Bill was a PhD geologist, and Anne was a mathematician, and they both were very serious mineral collectors. Bill served for many years as adjunct curator of mineralogy at the Cleveland Museum of Natural History, and Anne was inducted into the Micromounters' Hall of Fame on October 12, 2019. Both Bill and Anne, at various times, served as president both of the Mineralogical Society of Cleveland and of the Micromineral Society of the Cleveland Museum of Natural History, and Anne was inducted into the mi The rare barium lithium beryllium phosphate Wilancookite was named in their honor in 2015.