muromontite
noun
mu·ro·mon·tite
ˌmyu̇rəˈmän‧ˌtīt
plural -s
: a mineral Be2FeY2(SiO4)3(?) consisting of a silicate of yttrium, iron, and beryllium that is perhaps identical with gadolinite or is a variant of clinozoisite
Word History
Etymology
German muromontit, from Muromontium (Mauersberg) in Saxony, Germany, its locality + German -it -ite