An excellent display of inter grown weave-like acicular crystals of Cuprite in the variety Chalcotrichite, from the Chengmenshan Mine, China. Fine hair-like crystals of Chalcotrichite occupy two main areas on a black-brown Goethite Gossan matrix, with minor Malachite. The areas of Cuprite measuring to 2.5cm, with a lush sparkling red colour. A fine specimen of Chalcotrichite from the mine