Chalcanthite, Abe Lincoln, Mine, Yavapai, Arizona, ex. Louis Lafayette Collection #308, Miniature 1.5 x 5.0 x 5.2 cm, $75. Online 10/16.
    
    
      Bright powdery blue chalcanthite on aragonite matrix.  Specimens from this location are rarely seen on the market.  In great condition.