|Minerals of the Chickering Mine Walpole, NH COLUMBITE-(Mn) (Mn,Fe)(Nb,Ta)2O6 Back to Chickering front page.|
Specimen owner ID's (capitals): TM = Tom Mortimer, BW = Bob Wilken, BJ = Bob Janules, PC = Peter Cristofono, AW = Anna Wilken
Photographer ID's (lower case).
Identification: COL_1, COL_3 => visual, COL_2 => EDS analysis. Somewhat more Mn than Fe, but both present.
Discussion: A future analysis might indicate a Columbite-(Fe).