Streuveriteite (Ti,Ta,Fe+3)3O6 Tetragonal

Description: Strueverite is a rare black metallic mineral found in chemically complex pegmatites.

MARATHON COUNTY: Small grains of streuverite occur in pegmatite at the Koss Pit several miles east of Wausau, WI. (Tom Buchholz, 2002, pers. com.)

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