Bernáldez, Fernando & Rua Figueroa, Don Ramon; Memoria Sobre las Minas de Almadén y Almadenejos. Imprenta Nacional, Madrid, 1861. Quarto, pp. 327, errata, 27 folded tables, 2 folded colored maps and profiles.
The work is complete and in a later cloth with a gilt spine label. The binding is tight and clean with a book plate on the paste down. The original pale pink title wrap has been bound in. Inscribed to noted American mining geologist George Becker on the title page with his signature on the original title wrap. Later owners blind stamp on title page. Very minor wear to original title wrap, the text is exceptionally clean. In very good condition.
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The Almaden mines are located in the Province of Ciudad Real in Spain. They mines have been worked since prehistoric times and have been a major source of cinnabar and mercury. The authors of this rare work were both mining engineers in Spain. They describe the history of mining at Almaden, provide detailed historical tables of production and values, describe and illustrate the mine workings, describe the geology, economic geology, ore deposits, the mineralogy, and the origins of the deposits. A nice association copy which was once owned by George F. Becker who wrote extensively on the New Almaden quicksilver deposits in California.