5.5 x 4 x 3.5 cm. $250. Galena Crystals with Chalcopyrite on Dolomite. Joplin Field, Tri-State District, Jasper County, Missouri, USA. 9.5 x 6.5 x 6.5 cm. $500. Sharp, lustrous, battleship gray, Galena cubes (to 2.8x2.8x2.1 cm) aesthetically perched on a matrix covered with pastel pink, saddle shaped, Dolomite rhombs.