jarosite
Iran
11th Century
Source: Holakooei, P., de Lapérouse, J.F., Rugiadi, M. & Carò, F. (2018). Early Islamic pigments at Nishapur, north-eastern Iran: studies on the painted fragments preserved at The Metropolitan Museum of Art. Archaeol Anthropol Sci 10:175–195.
Recipe Details
Ingredients
iron, sodium, sulfate
Evidence
"Interestingly, μ-Raman identified yellow Na-jarosite in the yellow pigment of fragment no. 31 with Raman bands at 226, 297, 363, 444, 452, 562, 624, 1010, 1109, and 1154 cm−1."
Remarks
The use of jarosite as a pigment is less common in historical literature but has been identified in Egyptian and Roman-Egyptian contexts. Its presence at Nishapur suggests the exploitation of local deposits formed in oxidizing environments near iron-bearing minerals (p. 185, 187).
Scientific Analysis
Chemical CompositionNaFe3(SO4)2(OH)6
Analytical Techniques
Raman
XRF
Certainty Level
Confirmed
Instrumentally Verified
Verified
Metadata
Material Type
pigment
ColorYellow
RegionIran
Approx. Year1050
Source Information
AuthorHolakooei, P., de Lapérouse, J.F., Rugiadi, M. & Carò, F.
CollectionNishapur
Language
N/A
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