[meteorite-list] Meteorite or Meteorwrong?

[Michael Fowler]

Most andesites have phenocrysts.  This one doesn't.  Still could be  
andesite, but maybe not.

Mike Fowler
Chicago


> Mark B.>>I'd have to say andesite (definitely not granite). <<
>
> Well...after some page turning and googling etc, I have to now agree  
> with
> Mark that this rock is probably some sort of andesite...and  
> definitely not
> granite. I've never seen so many different rocks that I formerly  
> simply
> referred to as granite. :O) I haven't found a totally matching photo  
> of
> andesite to the photo eric referred to, but the literature gave me  
> the impression
> that andesite is what he has or is at least a good guess.
> GeoZay
>
>> Looks like a fine grained basalt covered with desert varnish.
>>
>> I see no fusion crust (flow lines etc.) and no regamaglypts. In the
>> cut surface, no metal, no chondrules, and no heat affected zone.
>>
>> Mike Fowler
>> Chicago