Possibly what he meant was for the various mineral forms of carbon, only
diamond was harder than anthracite coal. Of course, I don't quite know
where carbon Buckeyballs or nanotubes come into the picture now, since
they are basically man-made carbon configurations. Oh well, that's what
happens when you retire and lose track of what is going on.
Rance Velapoldi (Tranby, Norway)
On 8/14/2011 2:01 PM, Doug Peck wrote:
>
> Wow........as a trained geologist, I would certainly dispute THAT
> statement!!!
>
> Definitely untrue !!!
>
> <<<> When I toured an anthracite coal mine in PA several years ago, the
> guide told us that the only thing harder than anthracite is a diamond.
> >>>>
>
> Doug Peck
> Port Lines Hobby Supply
>
> [Non-text portions of this message have been removed]
>
>
[Non-text portions of this message have been removed]
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