This probably isn\’t online.
Ivanov, V.V., 1997. Ecological Geochemistry of Elements. v. 5. Rare
d-elements. Ekologiya, Moskva. 576 pp. (in Russian).
But would anyone with academic access like to try and find out?
To explain: this paper is the source of a tale that one of the Madagascan columbites has been reported as (occasionally!) containing up to 6% by weight Sc.
The question is, which one?
Thanks to those who tracked this down: especially PaulB. There does seem to be a copy of the book there. But it\’s got some wildly strange registration system. So, I\’ll have to find some other way…..but thanks again for looking.