umbalite (suomeksi)

Määritelmät:

(lb, en, uncountable) A variety of (l, en, garnet) consisting of a mixture of (l, en, pyrope), (l, en, almandine), and (l, en, spessartine), having the chemical formula Mg₃Al₂(SiO₄)₃-Mn²⁺₃Al₂(SiO₄)₃, exclusively found in the (l, en, alluvial) deposits of the w:Umba River (Tanzania), River Umba, and having a light-pink to purple colour.
(lb, en, countable) A (l, en, gemstone) consisting of the (l, en, mineral) umbalite.