danburite


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danburite

[′dan·bə‚rīt]
(mineralogy)
CaB2(SiO4)2 An orange-yellow, yellowish-brown, grayish, or colorless transparent to translucent borosilicate mineral with a feldspar structure crystallizing in the orthorhombic system; it resembles topaz and is used as an ornamental stone.
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