“6.6 x 5.0 x 2.9 cm. Aramayoite is a very rare silver sulfide species containing tin, and bismuth. This is material from the type locality from which it was described in 1926, collected only a few years later in 1929-1930 on the fourth Vaux-family-sponsored mineralogical expedition to South America. This is a rich sample of silver and tin ore which has a vug of pocket crystals and also exposed, flay-laying embedded crystals of aramayoite to 8mm which show metallic, mirror-like faces on the upper-right part of the specimen. Ex. Philadelphia Academy of Sciences Collection.
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Robert Lavinsky - 6th December 2008