Las Manforas Mine (Aliva Mine), Camaleño, Cantabria, Spain

This locality is world-famous for its specimens of transparent sphalerite in several different colours. The locality is often labelled as "Picos de Europa, Santander" - "Picos de Europa" being rather vague, since those mountains cover bits of three different Autonomous Regions and several municipalities, and "Santander" being just an obsolete name for Cantabria.

Refs.:
- Victor Yount (1990)
- Gomez, F. , Clavero, M.G. , Luque, C. and Calvo, M. (2006). "La mina de Aliva." Bocamina(17),pp:28-112.
- Orellana, R.S. and Alvarez, J.R.R. (2005). "Les sphalérites d'Aliva, Picos de Europa (Espagne)." Le Règne Minéral(63),pp:6-27.
- Orellana, R.S. and Alvarez, J.R.R. (2005). "Aliva, Picos de Europa (Espagne)." Revista de minerales, 2(6),pp:1-38.