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#31
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Is the US "cheap" when it comes to minting coins?
"bz" wrote in message 8.139... "Mr. Jaggers" lugburzman[at]yahoo[dot]com wrote in news:e409vu01v52 @enews2.newsguy.com: was made in the interiors of stars whose lives ended in supernova explosions billions of years ago In a sense, we are all star vomit. Carl Sagan preferred "star stuff." And I should have said "billions and billions." Mr. Jaggers |
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#32
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Is the US "cheap" when it comes to minting coins?
On Thu, 11 May 2006 13:59:04 -0500, "Dale Hallmark"
dalehall"AT"cableone.net wrote: Technically (with only a few exceptions) a mineral has to have a crystalline structure to be a mineral. Metals, may have a metallic structure and some can have a crystalline structure and a mineral doesn't have to be a pure element but it can be. But then neither does a metal :-) Oil is legally defined as a mineral and it has no crystalline structure and there are a few other amorphous type minerals such as Chrysocolla which is defined as a metamict mineral which originally did have a crystalline structure but it was destroyed by natural radiation. Zinc as a mineral is Zincite which is a Zinc oxide and is found naturally around Franklin N.J. Its crystal structure is hexagonal. When you refine it for the element Zn, it loses its crystal structure and becomes the element Zn which just happens to be a metal with a metallic structure. There is an ore of Zinc (Zinc blende) called Sphalerite and it has several possible crystal structures. It is mostly ZnS. An interesting point is that ice is a mineral technically but when melted it is not. Most (refined) metal is no longer a mineral but it can be an element or an alloy :-). Dale C'mon, Dale, don't skimp on the research! ;-) Great job! Reclining Buddha The Original Couch Potato! |
#33
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Is the US "cheap" when it comes to minting coins?
Reclining Buddha wrote in message ... On Thu, 11 May 2006 13:59:04 -0500, "Dale Hallmark" dalehall"AT"cableone.net wrote: Technically (with only a few exceptions) a mineral has to have a crystalline structure to be a mineral. Metals, may have a metallic structure and some can have a crystalline structure and a mineral doesn't have to be a pure element but it can be. But then neither does a metal :-) Oil is legally defined as a mineral and it has no crystalline structure and there are a few other amorphous type minerals such as Chrysocolla which is defined as a metamict mineral which originally did have a crystalline structure but it was destroyed by natural radiation. Zinc as a mineral is Zincite which is a Zinc oxide and is found naturally around Franklin N.J. Its crystal structure is hexagonal. When you refine it for the element Zn, it loses its crystal structure and becomes the element Zn which just happens to be a metal with a metallic structure. There is an ore of Zinc (Zinc blende) called Sphalerite and it has several possible crystal structures. It is mostly ZnS. An interesting point is that ice is a mineral technically but when melted it is not. Most (refined) metal is no longer a mineral but it can be an element or an alloy :-). Dale C'mon, Dale, don't skimp on the research! Reclining Buddha The Original Couch Potato! That was my problem, I did no research, wrote the above from memory (faulty). I have over 36 hours of college Geology including Mineralogy and collect rocks and minerals. I just don't get the chance to use that knowledge much anymore. Dale Use it or lose it! |
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