“Chalcotrichite Daye Mine, Hubei Province, China 9x 7x 5.5 cm. A truly exceptional chalcotrichite from the earlier find at the Day Ye mine. There is a mass of chalcotrichite crystals partially filling a vug, and overflowing from it, measuring 1x 5/8 inches. These were first brought to the during Tucson 2004, and have since become more difficult to find. ”