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Stefan Koch February 21, 2012 12:50PM

there are lots of pictures listed of these pseudomorphs "baryte after calcite" from taouz. Are they really baryte?
I do own a small example of this find and it does react with HCl, so mine is just a simple quartzitic-sand-calcite.
Does anybody know something about these specimens?

Peter Seroka February 21, 2012 03:08PM
Hi Stefan

you may find information regarding the sand calcites from the (uncertain) Moroccan desert under:

Those specimen are definitely calcites, covered by micro crystals of quartz; they are no pseudomorphs of Baryte after Calcite.
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