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

FenderMinerals

Regular price $125.00

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Blue Dumortierite crystal druzy that seldom occurs in fibrous crystals, as here. On quartz matrix.

Dimensions (millimeters): 45 x 40 x 25

Dimensions (inches): 1.8 x 1.6 x 1

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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