Re: Yes, there is a Mineral Definition

Technically, they are all glasses.

Carl 1 Lucky Texan wrote:
> 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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