- Santa Cruz de Tenerife Province
| [var. Titanium-bearing Magnetite] Ferguson, A. K. (1978) The occurrence of ramsayite, titan-låvenite and a fluorine-rich eucolite in a nepheline-syenite inclusion from Tenerife, Canary Islands. Contributions to Mineralogy and Petrology, 66 (1) 15-20 doi:10.1007/bf00376081 |