|Latitude & Longitude (WGS84):||38° 46' 31'' North , 4° 50' 50'' West|
|Latitude & Longitude (decimal):||38.77528,-4.84750|
|Other regions containing this locality:||Iberian Peninsula|
|Köppen climate type:||Csa : Hot-summer Mediterranean climate|
A mercury mine started before 1850. Owned by Minas de Almadén.
Volcano-sedimentary Hg ores hosted in quartzite and volcanic rocks.
Almaden is the largest mercury deposit in the world, having produced more than 8 million recorded flasks of mercury (250,000 metric tons; 1 flask = 76 lb) from a volume of ore of approximately 450 X 600 X 50 m3. Has produced about 1/3 of the world's mercury.
The name Almadén stems from the Arabic al-ma 'daniy 'yun, "the mine" or "the mineral".
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
29 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Silurian - Ordovician|
419.2 - 485.4 Ma
|Paleozoic sedimentary rocks|
Age: Paleozoic (419.2 - 485.4 Ma)
Lithology: Sedimentary rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. 
|Late Ordovician - Middle Ordovician|
443.8 - 470 Ma
|Early Cambrian - Neoproterozoic|
511 - 1000 Ma
Stratigraphic Name: Esquisto-Graovaquisco Complex
Description: flysch (sediments)
Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3.