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When there is no public data on the element in its pure form, price of a compound is used, per mass of element contained. This implicitly puts the value of compounds' other constituents, and the cost of extraction of the element, at zero. For elements whose radiological properties are important, individual isotopes and isomers are listed. The ...
Electrum is a naturally occurring alloy of gold and silver, [1] [2] with trace amounts of copper and other metals. Its color ranges from pale to bright yellow, depending on the proportions of gold and silver.
The list starts with 🜚 for gold and has early conventions that would later change: here ☿ is tin and ♃ electrum; ☾ is silver but ☽ is mercury. Many of the 'symbols' are simply abbreviations of the Greek word or phrase. View the files on Commons for the list of symbols. [citation needed]
As a stunt to publicise the 99.999% pure one-ounce Canadian Gold Maple Leaf series, in 2007 the Royal Canadian Mint made a 100 kg 99.999% gold coin, with a face value of $1 million, and now manufactures them to order, but at a substantial premium over the market value of the gold. [3] [4]
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The Code of Hammurabi (circa 1800 BC) sets the value of unskilled labour at approximately ten shekels per year of work, confirmed in Israelite law by comparing Deut 15:18 with Exod 21:32. [9] Later, records within the Achaemenid Empire (539–333 BC) give ranges from a minimum of two shekels per month for unskilled labour, to as high as seven ...
In 2013 the average price paid per ounce of pure silver was $4.12 up from $4.06, $3.99, $3.97 in 2012, 2011, 2010. Penasquito (one of the largest silver deposits in the world, Silver Wheaton's 25% interest would rank in the top 25 silver mines in the world) will give the company an average of 7 million ounces annually for 22 years (begins early ...
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