Prehnite ''cast'' after Laumontite

Item Description

A beautiful example of these old classics from Mumbai (Bombay), India featuring very pale green (virtually white/colorless) crystals of Prehnite which have formed a hollow ''cast'' after preexisting Laumontite that was dissolved away, leaving the form of the original crystal now preserved in Prehnite. These are quite similar to their cousins from the New Jersey trap rocks where Prehnite forms ''casts'' after Anhydrite and Glauberite most often. No damage, and very attractive. From the collection of William ("Bill") (1927-2006) and Anne (1928-2021) Cook of Cleveland, Ohio (#7054). 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.