aloisiite
noun
alo·isi·ite
ˌaləˈwiˌshīt,
-wis(h)ēˌīt
plural -s
: a mineral consisting of hydrous subsilicate of calcium, ferrous iron, magnesium, and sodium occurring in amorphous brown-to-violet masses
Word History
Etymology
Prince Luigi (Aloisius) Amedeo †1933 duke of the Abruzzi + English -ite
First Known Use
1909, in the meaning defined above