Chalcedony from Nujiang, Yunnan, China
China | |
| Jiajun Liu, Mingqin He, Zhiming Li, Yuping Liu, Chaoyang Li, Qian Zhang, Weiguang Yang, and Aiping Yang (2004): Mineral Deposits [Kuangchuang Dizhi] 23(1), 1-10. |
Fuguang Zhao (2007): Non-Ferrous Mining and Metallurgy 23(6), 20-25 |