Tantalite
Автор:
Jesse Russell,Ronald Cohn, издатель:
"VSD", ISBN:
978-5-5113-4990-9
High Quality Content by WIKIPEDIA articles! Tantalite, , is a mineral group that is close to columbite. The two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral guides. However, tantalite has a mu