| References: | structural determination by Dr. Joel Grice (C.M.N.), and Dr. Frank Hawthorne (U. of Manitoba); microprobe by Dr. Vladimir Zacek, Czech Geological Survey; Zacek, V., Petrov, A., and Hyrsl, J. (1998), Chemistry and origin of povondraite-bearing rocks from Alto Chapare, Cochabamba, Bolivia. Journal of the Czech Geological Society: 43: 59-67. |