EGYPTIAN ALCHEMY

Copper and Iron Extraction

In addition to copper, which was mined in the eastern desert between the Nile and the Red Sea, iron was known in Egypt from a very early period and came into general use about 800 B.C. According to Lucas, iron appears to have been an Asiatic discovery. It was certainly known in Asia Minor about I300 B.C. One of the Kings of the Hittites sent Rameses II, the celebrated Pharaoh of the Nineteenth Dynasty, an iron sword and a promise of a shipment of the same metal.

The Egyptians called iron 'the metal of heaven' or ba-en-pet, which indicates that the first specimen employed were of meteoric origin; the Babylonian name having the same meaning.

It was no doubt on account of its rarity that iron was prized so highly by the early Egyptians, while its celestial source would have its fascination. Strange to say, it was not used for decorative, religious or symbolical purposes, which - coupled with the fact that it rusts so readily - may explain why comparatively few iron objects of early dynastic age have been discovered.

One which has fortunately survived presents several points of interest: it is an iron tool from the masonry of the Great Pyramid of Khufu at Giza, and thus presumably dates from the time when the Pyramid was being built, i.e.
about 2900 B.C. This tool was subjected to chemical analysis and was found to contain combined carbon, which suggests that it may have been composed of steel.

By 666 B.C. the process of casehardening was in use for the edges of iron tools, but the story that the Egyptians had some secret means of hardening copper and bronze that has since been lost is probably without foundation. Desch has shown that a hammered bronze, containing 10.34 per cent of tin, is considerably harder than copper and keeps a cutting edge much better.

Of the other non-precious metals, tin was used in the manufacture of bronze, and cobalt has been detected as a coloring agent in certain specimens of glass and glaze. Neither metal occurs naturally in Egypt, and it seems probable that supplies of ore were imported from Persia.

Lead, though it never found extensive application, was among the earliest metals known, specimen having been found in graves of pre-dynastic times. Galena (PbS) was mined in Egypt at Gebel Rasas ('Mountain of Lead'), a few miles from the Red Sea coast, and the supply must have been fairly good, for when the district was re-worked from 19I2 to 1915 it produced more than I8,000 tons of ore.