sacagawea dollar coin- collin schafer

sacagawea dollar coin- collin schafer

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  • Hey, have you ever heard of the  sacagawea dollar coin?
  • Yeah but what about, it's just a dollar coin right ?
  • No it's not just a dollar coin! Theirs so many interesting things that you don't know about it  like how the president signed into law the sacagawea coin.
  • Uhhh.... I really don't know anything about the coin but if you buy me lunch you can tell me about it, fair ?
  • Okay fine, well did you know on one side there is and eagles and on the other side there is sacagawea, and the design is one of Glenna Goodacre.
  • The proccess of gettting this coin from a idea to a real thing took many commiettys and designers to diside which one to use.
  • That's cool and all but I'm more interested in what the coin is made out of, do you know that ?
  • Uh heck yeah I do, I'm an expert it contains about  77% copper (Atomic number 29 & Atomic mass of 63.5), 12% zinc ( Atomic number 30 & Atomic mass of 65), 7% manganese (Atomic number of 25 & Atomic mass 55), and 4% nickel (Atomic number of 28 and Atomic mass of 59).
  • Where do those metals come from?
  • Copper is found free in nature and is a transition metal, one of the worlds largest copper mines is in Chile. Zinc is found free in nature is a transition metal and the largest mine is India.  Manganese isn't found free in nature and is extracted from oxides is a Transition metal and is found in Australia.  Nickel is a transition metal and is naturally occurring and is found in Russia.
  • With all those metals how long do you think the coin will last?
  • A dollar coin lasts about 30 years before its no longer usable on average then it's returned to the mint to be recycled.
  • Well now I know all I could ever wish to know about the dollar coin thanks!
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