The story
From or cognate to Russian вюнцпахки́т (vjuncpaxkít), from the name of a mountain Вюнцпа́хк (Vjuncpáxk, “Vyuntspakhk”) on the Kola peninsula in Russia, where it is presumably found.
Etymology from Wiktionary, CC BY-SA 4.0.
vyuntspakhkite
Today it means: A mineral comprising mostly aluminosilicates of yttrium, ytterbium and various lanthanides. Full definition →