Jabir ibn Hayyan, often Latinized as Geber, is the name attached to a large body of alchemical and scientific writing produced in the Islamic world roughly between the 8th and 10th centuries, traditionally dated to about 721 to 815 and associated with a historical figure active in Kufa. The works credited to him describe systematic laboratory procedures including distillation, crystallization, calcination and sublimation, and detail apparatus and methods for preparing substances such as various acids, giving alchemy an experimental rigor that later influenced the development of chemistry as a discipline. Modern scholars widely doubt that one single author wrote the entire body of work bearing his name, and the true authorship and dating of the so called Jabirian corpus remains an active and unresolved question in the history of science. Whatever its true authorship, the corpus was highly influential on both later Islamic and, through Latin translation, European alchemical and early chemical practice.
Facts
Disputed
NationalityDisputed: an Arab of the Kufa-based Azd tribe by some accounts, or a non-Arab Persian client (mawla) of the Azd by others; associated with Kufa, Iraq and Khurasan, Iran 1 Sourced to the subject's own accountIbn al-Nadim reports Jabir hailed from Khurasan but spent most of his life in Kufa; whether he was an Arab member of the Azd tribe or a non-Arab Persian client of the Azd is disputed in the sources, and the historicity of Jabir as a single historical individual is itself disputed among modern scholars (see the linked open question). FieldSourced to the subject's own accountAlchemy and chemistry (the corpus attributed to his name also covers cosmology, astrology, medicine and philosophy) 1 Notable WorkSourced to the subject's own accountThe Jabirian corpus, roughly 600 Arabic alchemical and philosophical works attributed by name (about 215 still extant), including the Book of Seventy and the Great Book of Mercy 1 Connections
Open Questions
Source Jabir ibn Hayyan (Wikipedia)
Sources
1. Jabir ibn Hayyan (Wikipedia)
WikipediaBiography section, Biographical clues and legend
If he was a non-Arab Muslim client of the Azd, he is most likely to have been Persian, given his ties with eastern Iran (his nisba al-Ṭūsī also points to Tus, a city in Khurasan). According to Ibn al-Nadīm, Jabir hailed from Khurasan (eastern Iran), but spent most of his life in Kufa (Iraq), both regions where the Azd tribe was well-settled.
Introduction, paragraph 2
The works attributed to Jabir, which are tentatively dated to c. 850, c. 950, contain the oldest known systematic classification of chemical substances, and the oldest known instructions for deriving an inorganic compound (sal ammoniac or ammonium chloride) from organic substances (such as plants, blood, and hair) by chemical means.
The Jabirian corpus section, paragraph 1
There are about 600 Arabic works attributed to Jabir ibn Hayyan that are known by name, approximately 215 of which are still extant today.
View the Source Open Questions (1 open question)
Did a historical Jabir ibn Hayyan exist, and when was he born and when did he die?
The Jabirian corpus is not mentioned in any source before around 900 CE; the first biographical account is the Baghdadi bibliographer Ibn al-Nadim's Fihrist (987), written more than a century after Jabir's purported death, and some 10th century scholars already denied that Jabir had ever existed. Modern scholarship generally treats the name Jabir ibn Hayyan as a pseudonym used by one or more anonymous Shi'ite alchemists writing in the late 9th and early 10th centuries, so no reliable birth or death date for a single historical author can be established; reported death dates range from 806 to 816 CE and rest on late, mutually inconsistent reports.
What would resolve this A securely dated, independently corroborated primary source placing a historical Jabir ibn Hayyan's birth, death or documented activity would resolve the question. Short of that, a settled scholarly consensus on the dating of the earliest core layer of the Jabirian corpus, as distinct from its 9th to 10th century redaction, would narrow the range.
History of science; Islamic manuscript studiesJabir ibn Hayyan (Wikipedia)
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