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Spain | |
| Communication from Miguel Morales |
| Calvo Rebollar, Miguel. (1996). Mineralogía. La Unión. Bocamina, 2, 14-35 |
| Van der Berg, Wim., Calvo, Miguel, and Rewitzer, Christian. (2020). Secondary minerals from old smelter slags from the Puerto de Mazarrón area, Mazarrón, Murcia, Spain. Mineral Up, 5, (6), 8-32. |
Brunita open pit, La Unión, Murcia, Spain