There you go Francis, worth every kilonewton of effort. But, first I have to
set up a few collectors away from local pollutants, which in my case may be
more feasible than some. I live in the "boondocks" as it were, 1 1/2 mile
off tar roads and right smack in the middle of nothing. [Also great for star
watching!] Nothing much I can do about the stuff deposited via jet streams
so pictures may help to recognize comparative photos of microites in all the
journals and have some semi scientific fun.
Setting up collecting apparatus in several locations won't be an issue, so,
better stop gabbing, grab my plastic trash can covers, white poly, add a
little H2O to keep whatever lands from bouncing out, use my refrigerator
magnets first, then the neo ones, set up my stereoscopes etc.,
Who knows where such may lead and really who cares?! An instinct, an idea
followed is motivation and satisfaction all rolled into one.
It beats bantering but truly everyone's opinion has been very very helpful
in getting me charged up.
Jerry Flaherty
----- Original Message -----
From: "Francis Graham" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Thursday, November 22, 2007 8:53 AM
Subject: Re: [meteorite-list] Brownlees in Rainwater
Hello
Jerry was thinking along the same lines I was.
I was wondering how one might begin such a study on a
small budget.
One method that might be used is to gather the iron
spherules that morphologically resemble Brownlees and
put them into a millimeter high and wide pile. Place
them in between two jaws of a 100% copper electric
spark gap. Then, using a Bunsen Kirchoff spectroscope
with a camera in the back --available in most teaching
labs--snap a picture of the spectrum. Repeat with a
similar piece of Gibeon or Campo, and then maybe some
industrial debris. I'll bet the nickel content in the
spectrum will give it away as mostly meteoritic, or
confirm it is not. Nickel has 6 close lines of
emission in the blue-violet region that are
characteristic of it, the second to shortest wavelenth
is actually triple.
Of course, you'll have no more micrometeorite sample
doing this test--it will vaporize. But at least then
you could be fairly sure what the next micrometeorite
candidates you collect are.
So now that I have done my thinking on line, it must
be actually attempted!
Francis Graham
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