1.【矿】矽[硅]铍钇矿
1.a black or brown silicate mineral containing beryllium, iron, and yttrium.
1.a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime.
一种软质的银色稀土属金属元素,见于硅铍钇矿、独居石和磷钇矿中。