a white or greyish mineral consisting of lithium aluminium fluorophosphate in triclinic crystalline form. It is a source of lithium. Formula: (Li,Na)Al(PO4)(F,OH)
Word origin
C16: from Greek amblugōnios, from amblus blunt + gōnia angle; referring to the obtuse angles in its crystals
amblygonite in American English
(æmˈblɪgəˌnaɪt)
noun
a usually greenish or whitish crystalline mineral, (Li,Na)Al(PO4)(F,OH): it is an ore of lithium and is found in pegmatite
Word origin
Ger amblygonit < Gr amblygōnios, obtuse-angled < amblys, dull + gōnia, an angle (see knee) + -it, -ite1