Fig. 11


Download original image

(A) Composition of studied CGM grains in the quadrilateral Ta/(Ta + Nb) versus Mn/(Mn + Fe) diagram. Enrichment tends of Ta and Nb (grey arrows) observed for CGM from various types of pegmatites according to Černý (1989). (B) Sn + Ti + Zr vs. Mn/(Mn + Fe) (atoms per formula unit, apfu) binary diagram showing a poorly defined general trend of M4+ traces impoverishment with increase of (Mn/Mn + Fe) ratio. (C and D) Trace element vs. Ta + Nb + Mn + Fe (apfu). (E) Zr + Ti vs. Sn (apfu) binary diagram showing the correlation between Zr, Ti and Sn in columbite-tantalite grains within almost all pegmatites fields. (F) U vs. Sn (apfu) binary diagram showing the lack of correlation between the uranium and the tin contents within studied columbite-tantalite grains.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.