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Subject:
Re: Sun Colored Amethyst Glass
From:
Ron May <[log in to unmask]>
Reply To:
HISTORICAL ARCHAEOLOGY <[log in to unmask]>
Date:
Thu, 24 Jan 2002 11:00:05 -0500
Content-Type:
MULTIPART/ALTERNATIVE
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text/plain (466 bytes) , text/html (545 bytes) 
Yes, selenium...I had forgotten the yellowing mineral. But, Richard Fike
cautions that American glass makers had large supplies of manganese that
stretched out to the end of World War I or even 1920. The key to dating
broken glass from the World War I period is to find both amethyst tint and
straw-colored (yes, from the breaks side) glass in the same deposit. If your
feature lacks amethyst tint and the yellow-tint glass, then it is probably
later.

Ron May
Legacy 106, Inc.

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