spangolite
noun
spango·lite
ˈspaŋ(g)əˌlīt
plural -s
: a mineral Cu6Al(SO4)(OH)12Cl.3H2O consisting of a hydrous basic sulfate and chloride of aluminum and copper in dark-green hexagonal crystals
Word History
Etymology
Norman Spang, 19th century American mineralogist + English -o- + -lite