Aegirine with Orthoclase (RARE locality specimen) (ex Al Kidwell Collection)

Item Description

A very hard to find specimen from the little known Cove Creek Bridge locality on Hwy 51 near Magnet Cove, Arkansas. This piece features a few well-formed, euhedral, sharp, lustrous, black prismatic crystals of Aegirine measuring up to 3.9 cm sitting on white Orthoclase matrix, with an unidentified, fibrous/needle-like mossy green mineral (possibly Epidote?). Unfortunately none of the Aegirine crystals are terminated, but the prism faces are smooth and in excellent condition with glistening luster. If you collect minerals of Arkansas, this is a worthwhile reference piece of this seldom seen material dating back several decades. From the worldwide mineral collection of Albert Lewis Kidwell (January 1, 1919 - August 16, 2008). Al was a well-known mineral collector and research geologist with Carter Oil Company and later Exxon Oil Company in Houston, Texas. The phosphate species Kidwellite was named in his honor in 1974.