stromeyerite
noun
stro·mey·er·ite
ˈstrōˌmīəˌrīt
plural -s
: a steel gray mineral CuAgS consisting of silver copper sulfide of metallic luster and usually occurring in compact masses (hardness 2.5–3, specific gravity 6.15–6.3)
Word History
Etymology
German stromeyerit, from Friedrich Strohmeyer †1835 German chemist + German -it -ite