9.5 x 5.6 x 5.4 cm. Huantajayite was once a valid species, now shown to be a variety of argentian (silver-rich) halite which leaves a milky-white suspension of AgCl when dissolved in water. However, for a time, it was quite the novelty and this served as the type locality for the valuable rarity. The halite here is embedded in lightweight copper-rich matrix. Ex. Academy of Natural Sciences Philadelphia Collection.
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