Marmatite from Tian Shan, Asia
China | |
| Lianhui Dong and Changlie Tian (2001): Geology and Resources 10(2), 85-90, 101 |
Tajikistan | |
| (1998) International strategic mineral issues summary report: tungsten. Circular 930-O. US Geological Survey doi:10.3133/cir930o |