Pyrolusite (classic material) (ex Al Kidwell Collection)

Item Description

A wonderful example of the famous old Pyrolusites from the Upper Peninsula of Michigan. This piece hosts attractive brilliant, metallic, silvery-grey colored prismatic crystals (some of which have formed radial "sprays") on host rock matrix. The largest individual crystal measures 1.1 cm long. A true classic from the iron mines of Michigan. 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. This piece is also accompanied by a label from the collection of R. Wallace Knapp, who acquired the piece from Bob Markert.