編號 99676678

編號 99676678

Watch a video of this specimen by following the Vimeo link below: https://vimeo.com/1139861553/0f60d341d6
Here is a spray featuring remarkably sharp crystals of yttrium samarskite-fergusonite, a rarely well-crystallized niobium oxide of yterbium, iron (III) and yttrium, that mostly occurs in unusual chemistry pegmatitic veins.