description: <p style="text-align: justify;">LOCALITY: 4 3/4" Across <br /><br />LOCALITY: Mina Washington, near Arizpe, Rio Sonora Valley, Sonora Province, Mexico <br /><br />This fine quality, large octahedral pyrite crystal is a floater. It was formerly in the Richard Heck collection of Mexican mineral specimens. The author acquired it from Robert Lavinsky via a trade in August 2017. <br /><br />Photo by Matthew Webb of Melbourne, Victoria, Australia</p>
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