Nb-Ta minerals in a lithium pegmatite from Myokenzan, Ibaraki Prefecture, Japan.
نویسندگان
چکیده
منابع مشابه
FERROTAPIOLITE AS A PSEUDOMORPH OF STIBIOTANTALITE FROM THE LAŠTOVIČKY LEPIDOLITE PEGMATITE, CZECH REPUBLIC; AN EXAMPLE OF HYDROTHERMAL ALTERATION AT CONSTANT Ta/(Ta + Nb)
Dark brown porous ferrotapiolite is a dominant product of alteration in pseudomorphs after primary stibiotantalite from the lepidolite pegmatite at Laštovičky, western Moravia, Czech Republic. Two compositionally distinct varieties of ferrotapiolite were recognized, a volumetrically dominant Fe3+-rich phase and a very rare Sb-rich phase. Niobium-rich ferrotapiolite, with up to 17.51 wt.% Nb2O5 ...
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ژورنال
عنوان ژورنال: Mineralogical Journal
سال: 1995
ISSN: 1881-4174,0544-2540
DOI: 10.2465/minerj.17.338