Sulphur from Kütahya Province, Turkey
Turkey | |
| CAHIT HELVACI & RICARDO N. ALONSO (2000) Borate Deposits of Turkey and Argentina A Summary and Geological Comparison. Turkish Journal of Earth Sciences, Vol. 9, 2000, pp. 1-27 |
American Mineralogist April 1979 v. 64 no. 3-4 p. 362-366 | |
| Martin Števko-unpublished, PXRD confirmed |