Groutite
specimen number:
2321193
location:
Robert Mine, Cuyuna Range, Crow Wing Co., Minnesota, USA
description:
Sparkling black crystals of groutite to 0.3 cm in size rich throughout this matrix. Slight micro-chipping present. Still very good for the species for other cabinet display piece.
Size: 14.0 x 12.0 x 8.0 cm (cabinet)
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