moschellandsbergite
noun/ˌmɑːʃəlˈlændzbɝːɡaɪt/
Etymology From Moschellandsberg + -ite, after the town in Germany.
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Chemistry, Geography, Geology, Mineralogy, Natural sciences, Physical sciences A very rare mineral made of a natural alloy of silver and mercury, having the chemical formula Ag₂Hg₃, found in low-temperature hydrothermal ore deposits.