Dolomite pseudomorph after Calcite (ex Bill and Anne Cook Collection)

Item Description

A very attractive pseudomorph featuring golden brown Dolomite forming a pseudomorph after Calcite from an undisclosed locality in Durham, England. The rhombic shape of the original Calcite crystals can clearly be seen on the top/display side of the specimen, and the underside features hollow negative "casts". A really attractive and unusual piece for the area, a must-have specimen for any fan of pseudomorphs. From the collection of William ("Bill") (1927-2006) and Anne (1928-2021) Cook of Cleveland, Ohio. 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.