Ibn Rassam is widely known to have invented the techniques through which he obtained copper from varieties of malachite. He also ascertained indigo by heating various substances.[2] He was a colleague of the chemist, Abul Ashba ibn Tammam (d.1361).
References
^Nasser Rabbat (1998). "Architects and Artists in Mamluk Society: The Perspective of the Sources". Journal of Architectural Education. 52 (1): 30–37. doi:10.1111/j.1531-314X.1998.tb00253.x. JSTOR1425493.