eudialyte
noun
eu·di·a·lyte
yüˈdīəˌlīt
plural -s
: a mineral Na4(Ca,Fe)2ZrSi6O17(OH,Cl)2 consisting of a brownish red silicate chiefly of sodium, iron, zirconium, and calcium that occurs in crystals or masses and is optically positive (H.5–5.5, specific gravity 2.9–3.0)
Word History
Etymology
German eudialyt, from Greek eudialytos easy to dissolve, from eu- + dialytos capable of being dissolved, from dialyein to dissolve