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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 ...
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.
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.
Waist beads actually originated in ancient Egypt, where they were known as girdles.Egyptians wore them around their waist or lower abdomen. [2] [3] Girdles were symbols of status and were made of chains, wire, thread, and shells, and often featured multiple colors [4] Modern-day people from many African cultures wear waist beads, including Ghanaians, Senegalese, Igbos, Yorubas, Ewes, Ashantis ...
This is a list of governorates of Egypt by GDP and GDP per capita. The Egyptian pound (EGP) has been converted to the international dollar using the IMF's Purchasing Power Parity conversion rate (one International dollar per 4.538 EGP in 2021).
Magnetite has been important in understanding the conditions under which rocks form. Magnetite reacts with oxygen to produce hematite, and the mineral pair forms a buffer that can control how oxidizing its environment is (the oxygen fugacity). This buffer is known as the hematite-magnetite or HM buffer.