nuffieldite
/ˈnʌfiːldʌɪt/Mineralogy
noun
An orthorhombic sulphide of copper, lead, and bismuth (also containing antimony), occurring as elongated steel-grey crystals or grains and originally found at a locality in British Columbia, Canada.
Origin
1960s. From the name of Edward Wilfrid Nuffield, Canadian geologist + -ite.