Amber Listserv / copal

[Andy Ng]

Well put, oh scholarly adventurer John. And I can't wait for the C-14 test
results! Almost 2AM here..catch ya on the flipside.

Andy

On 7/13/06, JOHN FUDALA <ambersafari at gmail.com> wrote:
>
> If I may, gentelmen...
>
> Glen, what makes you say that the pieces you call copal because they are
> affected by acetone are not of the same age as "true" Mexican amber?
> The inclusions in them might be of the same age as the rest of the resin
> pieces. It might be that these pieces were in a different enviroment that
> affected their rate of maturing. It might be resin from different plant
> growing among all the other plants making up most of the bulk of Mexican
> amber.
> Andy's "amber" and "copal" are totally different bunches of chemicals that
> share just one common characteristic- some are and some are not affected by
> acetone.
>
> Everyone would do a lot better paying attention to the fact that the name
> copal is associated with deposits of a uniform resin from Colombia or
> Madagascar for example. Or Cotui in DR.
> You do not find a mix of "amber" and "copal" there- it is all copal.
>
> And just because in Mexico or Baltics you do happen to find pieces that
> are different that the bulk of resin, this does not make it automatically
> "copal". It most probabely is some kind of resin that occured alongside of
> the main product. It should be studied and named accordingly, as most likely
> it is not "just" copal.
>
> John
>
> On 7/12/06, glen <gosborne at shaw.ca> wrote:
>
> >  andy, I do run across some copal in Mexico but I do have a test that
> > works for that deposit. I do not buy amber from other deposits so I never
> > really think about it. of course all things have their own beauty and
> > appeal. I sell amber on my website and for this reason I am always
> > interested in debate about copal versus amber. are inclusions in copal
> > fossils? but then are all inclusions in amber fossils, that is with some
> > resins that are very young, are the inclusions truely fossils. the
> > definition for a fossil in websters dictionary is : a remnant, impression or
> > trace of an animal or plant of past geological ages. at 22 to 26 million
> > years old I believe that amber from Mexico fits this description. I believe
> > that no inclusions in copal fall into this catagory. what is your opinion?
> > glen
> >
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>
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