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Gratuitous shot (by Jeff Scovil) of 10 cm tall spinel twinned native silver crystals from Batopilas, Chihuahua. Ex-Philadelphia Academy of Sciences. This piece almost certainly came out in the mid-late 1820s through Joel Roberts Poinsett. It probably was "recatalogued" from his American Philosophical Society donation that included several important Mexican silver mineral specimens (Author: Peter Megaw)
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