|Location is approximate, estimate based on other nearby localities.|
|Latitude & Longitude (WGS84):||36° North , 4° West (est.)|
|Margin of Error:||~11km|
|Other regions containing this locality:||Iberian Peninsula|
|Köppen climate type:||Csa : Hot-summer Mediterranean climate|
|Name(s) in local language(s):||Mina Concepcion|
This was the most important iron mine in Malaga province since the foundation of la Concepcion iron mining and steel corporation in early 1826, by Manuel Agustin Heredia, a famous businessman from Spanish society of the middle 19th century. At the beginning of the 20th century (1909)the mine was worked by the English company "The Marbella Iron Ore Company Limited", transporting the mineral ore to the UK.
La Concepcion or Peñoncillo mine is a remarkable calcium-magnesium skarn in marble-biotite gneiss-amphibolites "hornfels", and catazone sequences (Blanca Unit), folded and fractured, closely related to the tectonic border with Alpujata massif (alpine lherzolites type-peridotites). Crystalline gneisses are strongly folded with biotite-pyrite and amphibole.
Marbles are granoblastic and banded (white colour), where amphibolites lenses bearing magnetite are interlayered (ortho amphibolite).
Host rock and iron ores are strongly folded, forming asymmetric syncline. As a result, ores often form wedge-shaped lenses which generated problems in underground explorations.
Ores were preferably Pyrite-magnetite refusing Pyrrhotite. Pyrite and minor chalcopyrite developed later than magnetite ores.
23 valid minerals.
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Calvo, M. (2009) Minerales y Minas de España. Vol. IV, Óxidos e Hidróxidos. Escuela Técnica Superior de Ingenieros de Minas de Madrid - Fundación Gómez Pardo. 752 pp.
Leine, L. (1967) Geology of a magnetite deposit of the Mg-Skarn type near Marbella, Spain. Economic Geology 62, 926-931.
Mollat, H. (1965) Die Geologie der Sierra Blanca and ihrer Umgebung (Westliche Betische Kordilleren). Thesis University of Bonn, 75 pp.
Romero Silva, J.C. (2003) Minerales y Rocas de la provincia de Málaga. Edited by CEDMA. Málaga County Council. 318 pp. 1 map.