A dark grey to black sulfide, formula₄S₅₋₈)A dark grey to black sulfide, formula (Pb₅Au(Te,Sb)₄S₅₋₈).
A dark grey to black sulfide, formula (Pb₅Au(Te,Sb)₄S₅₋₈).
Named after Nagyág, a mineral mine in Săcărâmb, Romania.
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regular