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Dumortierite Blue crystal druse on quartz, Brazil Mines, Rare Thumbnail Mineral Specimen


Regular price $50.00

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Blue Dumortierite seldom occurs in crystals, here in fine small crystal druse. On quartz matrix. In Perky Box

Dimensions (millimeters): 25 x 20 x 15

Dimensions (inches): 1 x .75 x .6

Origins: Vaca Morta Quarry, Serra de Vereda, Bahia, Brazil, South America

Dumortierite is a fibrous aluminium boro-silicate mineral, Al7BO3(SiO4)3O3. Dumortierite crystallizes in the orthorhombic system rarely forming crystals, as here. Dumortierite is commonly found in aluminum rich metamorphic rocks in contact metamorphic regions and in some pegmatites.

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