Argentite

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San Juan de Rayas Mine (Rayas Mine; Reyes Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico
© 2001 John H. Betts

Anglo-Saxon name for:	Acanthite
English and Italian synonym of:	Acanthite

The name 'argentite' refers to the high-temperature form of silver sulphide, only stable over 177 °C. Under this temperature any samples of 'argentite' convert to acanthite.

The name argentite is therefore used (confusingly) by some to describe pseudo-cubic pseudomorphs of silver sulphide (acanthite) where the original crystal form of the high-temperature cubic argentite has remained. The correct way to label such specimens would "acanthite, pseudo-cubic" or "acanthite, pseudomorphous after argentite".

References for Argentite
Reference List: - +	Ramsdell (1925), American Mineralogist: 10: 286. Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 176-178. Dana's New Mineralogy, 8th Edition (1997) by Gaines, et.al, p. 42.
Internet Links for Argentite
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