Minnesota Mineral Specimens For Sale



OKH-649    Groutite      Robert Mine, Cuyuna, Minnesota.  Ex.  Paul and Dawne Dunning Collection.   This fine example of these rare crystals measures 4.6 x 2.9 x 1.4 cm and is composed of plates up to us centimeter wide.  For groutite crystals these rank is huge.  There are very high luster and tabular form.  To the untrained eye one would think they were hematite crystals.   Very fine.  $160

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