| 释义 |
arf·ved·son·ite
\ˈävə̇dsəˌnīt\ noun
(-s)
Etymology: J.A.Arfvedson died 1841 Swedish chemist + English -ite
: a silicate of sodium, calcium, and iron, approximately Na2-3(Fe,Mg,Al)5Si8O22(OH)2, of the amphibole group occurring in black monoclinic strongly pleochroic prisms in certain igneous rocks |