Arsenopyrite

Item Description

A fine miniature sized specimen of blocky, sharp, lustrous, metallic Arsenopyrite crystals from the famous Yaogangxian Mine in China. The piece is in very good shape, with crystals measuring up to 2.2 cm, free of matrix. There is a slight iridescent patina on the surface for a nice almost antique appearance. No major damage on the front, but the piece is contacted on the back where it was removed from the pocket. From the collection of William ("Bill") (1927-2006) and Anne (1928-2021) Cook of Cleveland, Ohio (#12622a). 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.