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Posted in response to Dotted Disdero from Warren on December 31, 2010 at 10:26:41:

Re: Dotted Disdero

Warren, I have examined a number of west Texas and Mexican agates with similar specks under the 'scope. Most were crystals or tiny dendrites of hematite (red), magnetite, pyrite, or mangnese (black). They appeared to grow on specific surfaces (bands) and then were covered by the next layer and the process repeated. The pink color of some agates like crazy lace is due to lots of tiny flat crystals of red hematite. Happy New Year!

From MikeR - January 04, 2011 at 10:59:12
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Message: 69628



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