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What is black copper is extremely rare

What is black copper?  'Science' is an extremely rare compound. According to the scientist, black copper is an extremely rare metal and has special abilities. 
What is black copper is extremely rare
What is black copper is extremely rare, the truth about how much black copper costs,hottest,society 

It is a composite of copper and other valuable metals such as gold, silver, tin or zinc ... and is used in space industries like NASA and more, Black Copper in the way scientist is made.  into a black alloy and currently there is no specific research on this extremely rare compound,So how much does black copper cost?  According to antique experts, black copper could not estimate the value of this rare compound 1kg could reach tens of billions or hundreds of billions of dong. Black copper legend of humanity? has a great value for the threshold that can cure diseases when touching black copper, according to religion it is used to cast Buddha statues or where there is black copper appearing, that place is a peaceful place of karma, or will be born with more intelligence than people, natural genius.                                                                                 So in general, according to scientists or human legends, Black Bronze is extremely rare.What is black copper is extremely rare, the truth about how much black copper costs.