This is a massive, surprisingly attractive, and very old smithsonite from this classic mining district of Arkansas. I have never myself seen a piece like this, as they were found a long time ago and simply are not available in any collection I know of to view. This one came out of the Seaman Museum, where it had originally been part of the collection of Prof. William Heinrich. Though the color is "challenged" the overall look of the piece is actually, surprisingly, attractive. I rate this for the locality as a fairly significant US smithsonite specimen. 14.5 x 10.3 x 6.9 cm