A mercury mine started before 1850. Owned by Minas de Almadén.
Volcanosedimentary Hg ores hosted in quartzite and volcanic rocks.
Refs.:
- Mining Annual review (1985):119.
- Crawford, J.W. (1988). "Famous mineral localities: The Almaden mines Ciudad Real Spain." Mineralogical Record, 19(5), 297-302.
- Hall C. M., Higueras P. L., Kesler S. E., Lunar R., Dong H., Halliday A. N., 1997. Dating of alteration episodes related to mercury mineralization in the Almadén district. Earth Planet. Sci. Lett. 148, 287-298.
- Hernandez a., Jébrak M., Higueras P., Oyarzun R., Morata D., Munhà J., 1999. The Almadén mercury mining district, Spain. Miner. Deposita, 34, 539-548.
- www.gl.rhul.ac.uk/geode/Variscides/Almaden.html
- in the collection of Daniel Toro
Mineral List:29 entries listed. 23 valid minerals.
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