The specimens studied were collected by Mr.C.T.Wang (王景尊)from Yuehfangkou (月房溝),a locality at about 1500 m.SW of Shangpei-chuan (上白泉) village,the latter at about 45 km west of Chiaocheng city.
S. W. WANG.1933. A STUDY ON THE ORTHOCLASE CRYSTALS AND TWINS OF CHIAOCHENG, SHANSI[J]. Acta Geologica Sinica(),12(0):522-524
