Chalcedony from Tongling, Anhui, China
China | |
| Jianqing Lai, Caishun Lin, Shenglin Peng, and Keren Tan (2004): Geology and Prospecting 40(3), 60-63 |
| Junwu Lu and Yuanfa Xia (2001): Geology and Prospecting 37(3), 29-31 |
| Bailin Chen (1989): Geology and Prospecting 25(4), 17-22 |
Guifang Zhao, Yufu Sun, and Demin Yang (1987): Geology and Prospecting 23(4), 43-45 |