Xiangquan Tl deposit, He Co., Chaohu Prefecture, Anhui Province, China

Host rocks are Lower Ordovician micrite, calcilutite and marl within the Dalongwang Mountain - Xiao Mountain anticline. The ore zones are fold and fault controlled. Thallium occurs mainly in pyrite but minor amounts form as lorandite and hutchinsonite.

Ref.:
- Zhou, T.F., Fan, Y., Yuan, F., Wu, M.A., Hou, M.J., Voicu, G., Hu, Q.H., Zhang, Q.M., and Yue, S.C. (2005): A preliminary geological and geochemical study of the Xiangquan thallium deposit, eastern China: the world’s first thallium-only mine. Mineralogy and Petrology 85(3/4), 243-251.
- Ming-An Wu (2006): Study of Geologic Characteristics of the Xiangquan Thallium Deposit, Anhui Province. Journal of Hefei University of Technology 29(12), 1571-1576.
- Zhou, T. and Cooke, D.R. (2006): Geochemistry of the Xiangquan Thallium deposit, China. Geochimica et Cosmochimica Acta Supplement 70(18), 752.