well, we are pretty sure on the quartz. I hadn't really thought about the gypsum, but seems likely. my level of geology levels off at the "ooh, shiny" stage. I'll try to get you some closeups of soome of the others with interesting minerals mixed with the quartz.
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timeasmymeasure
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Date: 2008-03-19 01:30 am (UTC)no subject
Date: 2008-03-24 07:28 pm (UTC)I'll try to get you some closeups of soome of the others with interesting minerals mixed with the quartz.