[Rockhounds] Lipidolite and the micas

[edwardjwagner at bellsouth.net]

Dear Andrew Turner: The terms "ferrocolumbite and manganotantalite" are no longer used, and have been replaced by the simple term "Niobium". This may sound simplistic, but Columbite is considered an archaic term.  Often one sees the name "the Tantalum-Niobium end series", which includes all the "ferros, ferrics, manganos" and the other replacement metals that inhabit the aforementioned crystal structures. If one is familiar with what the names represent, than it is easier to use a simple name. Edward Wagner

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