Arisman ( fa, اريسمان, also
Romanize
Romanization or romanisation, in linguistics, is the conversion of text from a different writing system to the Roman (Latin) script, or a system for doing so. Methods of romanization include transliteration, for representing written text, an ...
d as Arīsmān and Erīsmān; also known as Azīsmān and Brīsmān) is a village in
Emamzadeh Aqaali Abbas Rural District,
Emamzadeh District,
Natanz County,
Isfahan Province,
Iran
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...
. At the 2006 census, its population was 1,745, in 489 families.
Ancient metallurgy
At Arisman, some of the oldest evidence of silver production in the world has been found - such as the
litharge
Litharge (from Greek lithargyros, lithos (stone) + argyros (silver) ''λιθάργυρος'') is one of the natural mineral forms of lead(II) oxide, PbO. Litharge is a secondary mineral which forms from the oxidation of galena ores. It forms as c ...
fragments and cakes. This was taking place around 3600 BC.
Arsenical copper
Arsenical copper contains up to 0.5% arsenic which, at elevated temperatures, imparts higher tensile strength and a reduced tendency to scaling. It is typically specified in boiler work, especially locomotive fireboxes. It also helps prevent embr ...
production was also taking place.
[Nima Nezafati, Ernst Pernicka, Barbara Helwing, Dirk Kirchner]
Ancient metallurgy at Arisman, central Iran; A reconsideration.
Conference: The First Iran-German Symposium on Archaeometry, TABRIZIAU, November 1-4, 2016
The ore was mined from some polymetallic ore deposits in the same area. These deposits contain a mixture of copper, arsenic, lead, and silver. First, the ore was smelted, and then the second step of
cupellation
Cupellation is a refining process in metallurgy where ores or alloyed metals are treated under very high temperatures and have controlled operations to separate noble metals, like gold and silver, from base metals, like lead, copper, zinc, arse ...
was used to separate arsenical copper and silver.
See also
*
Tepe Sialk
Tepe Sialk ( fa, تپه سیلک) is a large ancient archeological site (a ''tepe'', "hill, tell") in a suburb of the city of Kashan, Isfahan Province, in central Iran, close to Fin Garden. The culture that inhabited this area has been linked t ...
References
Populated places in Natanz County
{{Natanz-geo-stub