Witherite    Mahoning #1 Mine, Cave-In-Rock, Illinois.  Ex. Dr. Steve Chamberlain Collection #6296.  This outstanding small cabinet specimen is composed of yellow pseudohexagonal twinned witherite crystals which are very translucent and take the form of a large ball.  It is a very displayable, high luster piece which sits nicely and is damage-free.  It measures 6.4 x 5.7 x 3.7 cm.  This piece fluoresces a strong yellow color in S.W.  U.V. has a very strong phosphoresce, as well.  There is one crystal extending out of the primary cluster which has a barrel shaped form to the crystal.  This specimen is an outstanding example of this rare carbonate mineral from Cave-In-Rock, IL.  A very displayable and desirable American specimen in all regards.  300$