Tourmaline in Muscovite Ingersoll Mine, Keystone, Keystone District, Pennington Co., South Dakota 9.9cm x 9.4cm x 1.75cm Ex. A. E. Seaman Mineralogical Museum (Michigan College of Mines)

Description/Interesting Notes: An absolutely incredible example of tourmaline from South Dakota!!! These old time Keystone district tourmalines are nearly IMPOSSIBLE to obtain!!! In addition to being a very rare locality specimen - this is the BEST example of South Dakota tourmaline I have ever seen!!! This specimen hosts several wonderfully gemmy tourmaline crystals up to 3.5cm in a large, gemmy book of muscovite crystals!!! The tourmaline crystals have incredible, CHOICE blue green color (color that would be superb from ANY locality - let alone South Dakota)!!! The crystals are razor sharp and glassy!!! The largest crystal actually has a second, slightly divergent crystal right next to it just under the surface of the muscovite!!! There are also numerous crystals completely embedded within the muscovite as well!!! This is a significant and major specimen for the locality!!! This specimen is from the A.E. Seaman museum and retains its old label (with donor information) and its affixed catalogue number!!! The pics don't even come close to doing it justice!!! A VERY rare find indeed - don't miss out!!! Good luck and be sure to check out my other exciting mineral auctions on ebay!!! STAY TUNED!!! MORE AUCTIONS WILL BE ADDED MONDAY NIGHT FOR A SPECIAL 3-DAY AUCTION, ENDING THURSDAY NOVEMBER 12th!!! We are constantly acquiring new exciting specimens & old collections!!! BE THE FIRST TO FIND OUT WHAT'S NEW & CHECK OUT OUR Ebay "About Me" page!!! ALSO, CHECK BACK OFTEN BECAUSE WE WILL BE ADDING MORE UPDATES AND SPECIMENS IN THE UPCOMING WEEKS!!!

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