Quartz from Kafang ore field (Kafang Mine), Gejiu Sn-polymetallic ore field, Gejiu City, Honghe, Yunnan, China
China | |
| (1998) International strategic mineral issues summary report: tungsten. Circular 930-O. US Geological Survey doi:10.3133/cir930o |
Chengdian Pen (1986): Mineral Deposits 5(3), 37-48 |