Amethyst from Zacatecas, Mexico
Mexico | |
| Frank W. Hess/ E.J. Trybalski specimen |
| Dilley, L. M. (1993). Mineralogy and fluid inclusion study of the San Mateo vein, Fresnillo district, Zacatecas, Mexico (Master's thesis, New Mexico Institute of Mining and Technology). |
Ojo Caliente, Ojocaliente Municipality, Zacatecas, Mexico