Re: Yes, there is a Mineral Definition

So what is opal?(or even tabisheer?) or obsidian?

Carl
1 Lucky Texan


Fred_Miner wrote:
> DEFINITION OF A MINERAL:    A mineral is a natural, homogeneous, inorganic
> solid with a crystalline atomic structure. Crystallinity implies that a
> mineral has a definite and limited range of composition, and that the
> composition is expressible as a chemical formula.
>
>
> From  http://www.mine-engineer.com/mining/mineral/mineralindx.htm
>
>
> Bob perhaps you could stumble into the library, next time, or are they out
> of fashion now days.
> The other day I was wondering, are there parallel dimensions around us, or
> are they just figments of my imagination , , ,
>
>
>
>
> "Bob" <[EMAIL PROTECTED]> wrote in message
> news:[EMAIL PROTECTED]
>
> > I am stumbling to find a true definition of a mineral, to help me
> > figure out if the following are indeed considered minerals:  A bone -
> > A shell from a crustacean, Petrifed wood, a fossil, and Coal.  Can
> > anyone help out there - thanks - Bob


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