Diamond Arkansas

Natural diamonds are found in kimberlite of ancient volcanic "pipes," found in South Africa, Arkansas, and elsewhere. Diamonds are now also being recovered from the ocean floor off the Cape of Good Hope. About 30% of all industrial diamonds used in the U.S. are now made synthetically. 

Diamonds were discovered in 1867 along the Orange River in South Africa, and since then Africa has been preeminent in the production of diamonds in the seventies and eighties occurred a series of amazing discoveries of diamond fields and stones of extraordinary size. Diamonds have also been found in Australia. Borneo. British Guiana, and Arkansas. 

Many stones that are not genuine diamonds are popularly so called. Thus Brazil, Bristol, Cornish, Derbyshire, Alaskan, Arkansas, Marmora and German diamonds are quartz. Matura or Ceylon diamonds are white zircons. The Saxony diamond is white topaz the Simili or Strass diamond is merely a paste (glass). Carbonado and coal are frequently termed black diamonds — and not without reason. 

From the Latin, carbo, meaning charcoal. Carbon, an element of prehistoric discovery, is widely distributed in nature. It is found in abundance in the sun, stars, comets, and atmospheres of most planets. Carbon in the form of microscopic diamonds is found in some meteorites. Natural diamonds are found in kimberlite of ancient volcanic pipes found in South Africa, Arkansas, and elsewhere. Diamonds are now also being recovered from the ocean floor off the Cape of Good Hope. About 30% of all industrial diamonds used in the U.S. are now made synthetically. 

The use of CVD diamond for electronic packaging was reported in Electronic Packaging and Interconnection Handbook. The efforts of numerous companies to use diamond substrates, and the successes and problems, were reported. Norton Diamond Film marketed substrates as large as 6 in in diameter and 1 mm thick, shown in Fig. 1.11. Researchers at several companies, including Raytheon, GE, and the University of Arkansas, demonstrated that circuitry could be fabricated on CVD diamond substrates, and major improvements in thermal management were achieved in the process. " ... 

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