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Hematite (/ ˈ h iː m ə ˌ t aɪ t, ˈ h ɛ m ə-/), also spelled as haematite, is a common iron oxide compound with the formula, Fe 2 O 3 and is widely found in rocks and soils. [6] Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe 2 O 3. It has the same crystal structure as corundum ...
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This exchange value of 97.5 piastres to the pound sterling continued until the early 1960s when Egypt devalued slightly and switched to a peg to the United States dollar, at a rate of E£1 = US$2.3. The Egyptian pound continued with its exchange rate of £E = £1 0s 6d sterling until the beginning of the 1960s.
Hematine ring. Hematine (also magnetic hematite, hemalyke or hemalike) is an artificial magnetic material. [1] Hematine is widely used in jewelry. [citation needed]Although it is claimed by many that it is made from ground hematite or iron oxide mixed with a resin, analysis (of one object) has demonstrated it to be an entirely artificial compound, a barium-strontium ferrite.
The production of beads from imported glass shards, cullet (scraps) and undesired glass beads has a lively presence in the history of Sub-Saharan Africa. Imported glass was either formed by melting such imported glass, potentially adding desired colorants, and then shaping the melt into a bead form; or, by grinding down the imported glass to ...
Shell money usually consisted of whole or partial sea shells, often worked into beads or otherwise shaped. The use of shells in trade began as direct commodity exchange, the shells having use-value as body ornamentation. The distinction between beads as commodities and beads as money has been the subject of debate among economic anthropologists ...
A Carved Gold Dust Faturan Prayer Bead Strand made from North African Tribal Beads. In the bead trade, "Faturan" is thought to be a mixture of natural amber shavings with other materials, and is described as having been invented in the Middle East in the 18th or 19th century, however, there is some dispute over this within the trade.
A three-member consortium signed cooperation protocol with Egyptian government to establish a US$35–50m worth electronic Egyptian Commodities Exchange in Egypt as the first ever country in the MENA region; it will facilitate the well-being of the small farmers and supply of products at reasonable prices abolishing the monopoly of goods. [5] [6]