WGNHS
Wisconsin Geological and Natural History Survey

Wodginite

Lustrous black wodginite crystal in cleavlandite. From the Strickland Quarry, Portland, Middlesex County, Connecticut. Crystal is 21 mm long. (Photo courtesy Harold Moritz; unauthorized reproduction is prohibited.)

Formula: Mn(Sn,Ta)Ta2O8  Monoclinic

Description:

Wodginite is a rare mineral occurring in complex pegmatites. It forms reddish brown to nearly black tabular to irregular grains.

FLORENCE COUNTY: Wodginite is reportedly found in the lithium-rich pegmatites near Fern in T.39N. R.17E. It occurs as overgrowths on columbite-tantalite (Falster et al., 1995).