barrandite
noun
bar·ran·dite
bəˈranˌdīt,
ˈbarən-
plural -s
: a mineral (Fe,Al)Po4.2H2O consisting of a pale-gray hydrous phosphate of iron and aluminum belonging to the isomorphous series strengite-variscite
Word History
Etymology
French barrandite, from Joachim Barrande †1883 French geologist + French -ite