Definition of nowackiite in English:
nowackiite
Pronunciation /nə(ʊ)ˈvatskɪʌɪt/
noun
Mineralogy
A trigonal sulphide of copper, zinc, and arsenic occurring as grey or black crystals at Lengenbach, Switzerland; Cu₆ Zn₃ As₄ S₁₂.
Origin
1960s. From the name of Werner Nowacki, Swiss crystallographer + -ite.