very interesting- if you polish a skyrock with a soft lap , the pattern is often visible
>From: william anderson <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: [meteorite-list] etching?
>Date: Mon, 17 Nov 2003 05:08:28 -0800 (PST)
>
>Just had a bizarre thought that I have no answer to.
>Has anyone ever tried bringing out the widmanstatten
>pattern with a chemical free etch? I was remembering
>a fellow who liked to "frost" the busts of coins using
>a scaled down sandblasting outfit. He would mask the
>unetched areas with rubber cement. However if the
>taenite and kamacite have different hardnesses, the
>etch would be differential, so the pattern would
>emerge, and would happen without much fuss? Who knows
>what it would look like, but the visual desirability
>of an chemical etch might just be borne of no other
>alternatives. At the least there would be no great
>need for neutralizing the chems away. Just a random
>thought. Nice day to you all.
>Bill Anderson
>
>__________________________________
>Do you Yahoo!?
>Protect your identity with Yahoo! Mail AddressGuard
>http://antispam.yahoo.com/whatsnewfree
>
>______________________________________________
>Meteorite-list mailing list
>[EMAIL PROTECTED]
>http://www.pairlist.net/mailman/listinfo/meteorite-list
______________________________________________
Meteorite-list mailing list
[EMAIL PROTECTED]
http://www.pairlist.net/mailman/listinfo/meteorite-list
