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Dumortierite Blue crystal druse on quartz, Gemstone Mined in the gem fields of Brazil, Natural Rare Mineral Specimen

FenderMinerals

Regular price $50.00

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Blue Dumortierite seldom occurs in crystals, here in fine small, almost micro crystal druse. On quartz matrix.

Dimensions (millimeters): 45 x 30 x 20

Dimensions (inches): 1.8 x 1.2 x .75

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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