Ferro-hornblende from South America
Bolivia | |
| Petrov, Alfredo (n.d.) Personal Communication. Federico Ahlfeld field notes |
Brazil | |
| Souza Neto, J.A., Legrand, J.M., Volfinger, M., Pascal, M.-L., and Sonnet, P. (2008): Mineralium Deposita 43, 185-205. |
Peru | |
| Laubacher, G. (1978) estudio geologico de la region norte del Lago Titicaca. Boletin Instituto de Geologia y Mineria, 5, series D, 1-122 |
Boyacá Department, Colombia