[meteorite-list] How to recognise lunar, martian, other achondrites only by crust ?

From: Meteoryt.net <marcin_at_meteoritecentral.com>
Date: Sun Oct 16 17:04:04 2005
Message-ID: <003701c5d295$2afcfc70$0300000a_at_polandme2iekcc>

> Hello to the List.
>
> I was wondering how some meteorite hunters have the
> ability to recognise rare achondrites (lunar, martian,
> eucrites, diogenites) only by the look of the crust ?
>
>
> I'm really amazed how some lucky meteorite collectors
> found rare achondrites in a box of stones from
> morrocan dealers.

Its not soo difficult that its looks like.
Im not specialist in that matter but when You have box full of crapy
chondrites, recognize achondrite is not difficult. Usually I also use magnet
and loupe. This helps. Crust can say You alot but more You will see inside
broken fragments that most specimens have. If specimen have really weak
magnetism then You are looking for chondruls on crust and inside broken
fragments.If You really cant find any its Your decission to buy it or not.
Its alvays chance that You will find achondrite or, if You have no luck
amphoterite.
With not magnetic specimens its more easy becouse this can be ordinary rock
or achondrite. And I'm sure that everyone can recognize in 90% what is
meteorite and what is not.
OK, ok except martians and lunars. They are the most not-meteorite-like
stones for me. Including colorfull Dho90x series from Mr Haberer. Without
crust they looks like ordinary rocks.

So its not only crust but many other things that decide about purchase.
Ofcourse I not telling here about clear examples like diogenites or eucrites
with shiny fresh black crust and white interior without magnetism. :))

But on finish its alvays Your decision, Your feelings and experience. Soon
we can train ourselves. Lets go to Munich :))

PS. In Munich I will be pround to show You my new Urelite with quartz :)))))
that I buy last year in Munich. Everyone from Haag, Farmer to ET and Hmani
and many other people was wrong the same as me when they look at this stone.
Urelite looking stone is ordinary urelite-like stone. I make one mistake, I
not make "glass test". But no pain, I will find this funny maroccan dealer
this year and someone else get chance to buy this importand new urelite this
year in Munich. So its sometimes gamble. When You play You can win or You
can lose.
But on market we see only winners, but never loosers.



-----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
http://www.Meteoryt.net marcin_at_meteoryt.net
http://www.PolandMET.com marcin_at_polandmet.com
http://www.Gao-Guenie.com GSM +48(607)535 195
--------[ Member of Polish Meteoritical Society ]--------
Received on Sun 16 Oct 2005 05:04:14 PM PDT