[Colonial Numismatics] Today's XRF results 上市 Deposited
Re
- From fuldy2000@yahoo.com Mon Nov 18 08:11:26 2002
Return-Path: <fuldy2000@yahoo.com>
X-Sender: fuldy2000@yahoo.com
X-Apparently-To: colonial-coins@yahoogroups.com
Received: (EGP: mail-8_2_3_0); 18 Nov 2002 16:11:26 -0000
Received: (qmail 7521 invoked from network); 18 Nov 2002 16:11:25 -0000
Received: from unknown (66.218.66.216)
by m6.grp.scd.yahoo.com with QMQP; 18 Nov 2002 16:11:25 -0000
Received: from unknown (HELO web40408.mail.yahoo.com) (66.218.78.105)
by mta1.grp.scd.yahoo.com with SMTP; 18 Nov 2002 16:11:25 -0000
Message-ID: <20021118161125.42736.qmail@web40408.mail.yahoo.com>
Received: from [68.55.2.95] by web40408.mail.yahoo.com via HTTP; Mon, 18 Nov 2002 08:11:25 PST
Date: Mon, 18 Nov 2002 08:11:25 -0800 (PST)
Subject: Re: [Colonial Numismatics] Today's XRF results
To: colonial-coins@yahoogroups.com
In-Reply-To: <1aa.c2294df.2b09960c@aol.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
From: George FUld <fuldy2000@yahoo.com>
X-Yahoo-Group-Post: member; u=75368034
X-Yahoo-Profile: fuldy2000
Hi all:
I thought I might add my 2 cents to the XRF study.
Steffanelli and I were, I believe the first to use XRF
on coins independently. While in Rome in 1960 I
bought several obviously counterfeit gold dolllars.
With the cooperation of a friend at MIT's metallurgy
lab we ran tests on the coins. First we did Laue back
scattering, as compared to a real dollar. The
counterfeits had a strong crystallation structure, and
were obviously cast copies. The XRF test as to
composition showed the gold to be high, as I remember
about 92%. I published the results sometime in 1961
in Coin world. It hard to believe this was done over
42 years ago!!!
So we are back to really doping something
scientifically on this area.
George F
--- rg5turc@aol.com wrote:
> Thanks Roger,
>
> It was good meeting you and I'll post the XRF
> results in a couple of days.
> Thank you to all the members that provided their
> coins for the testing and
> Kayla Schlemmer for helping with the set-up and
> photography. My special
> thanks to Volker Thomsen for his efforts and I think
> the members put the man
> into hyper-drive over the 3 hours.
>
> Ray T.
>
__________________________________________________
Do you Yahoo!?
Yahoo! Web Hosting - Let the expert host your site
http://webhosting.yahoo.com - 2002-11-18
- 1
