Re: Left-Handed Quartz?
From: Repeating Rifle (salmonegg_at_sbcglobal.net)
Date: 03/24/05
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Date: Thu, 24 Mar 2005 22:30:50 GMT
in article 42431721.3948F16@hate.spam.net, Uncle Al at
UncleAl0@hate.spam.net wrote on 3/24/05 11:38 AM:
> Does anybody know of sources for
>
> 1) off-the-shelf
> 2) no twinning (Dauphine, Brazil, Liebisch, Japanese, Esterel,
> Sardinia, Breithaupt)
> 3) no inclusions, colorless
> 4) optical grade or electronic grade
> 5) cultured Z-plate or natural
> 6) minimum 3-cm in all directions, ~10 pieces or equivalent total
> volume
> 7) crystallographic space group P3(1)21 optically left-handed
> single crystal quartz?
>
> Commercially grown quartz is space group P3(2)21 and optically
> right-handed. It is not usable in this application.
>
> Thank you! Post here or use organiker'at'lycos.com
Although it has been many years, there was a rumor that synthetic quartz was
available in a single handedness. It was not true then, and it probably is
not true now.
If the companies are still in existance, I oulw try Karl Lambrect and
Rudolph Engineering.
To paraphrase someone I know, a Google search yields over 57,000 hits for
left hand synthetic quarta.
Bill
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