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Tugtupite

Posted on June 30, 2015 by John Bradshaw, GG (GIA)

Gem Notes
Introduction: Tugtupite is an interesting and rarely seen gem, closely related to sodalite with the formula, Na4(AlBeSi4O12)Cl. It was discovered in 1957 by Professor H. Sørensen in the coastal cliffs of Tugtup Agtakôrfia on the…

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