Calcite and Dolomite    LaFarge Quarry, Lockport, New York.  Ex. Michael R. Walter Collection.  Excellent specimen with only minor damage to a couple of edge crystals where removed from rock, as would be expected.  Great yellow color and fine crystal form, front and back.  8.5 x 5 x 4.2 cm.  This material has become uncommon on the mineral market over the past several years.  This example is outstanding for size and quality.   $60