The said tourmaline is one or more of the kinds such as iron-tourmaline, elbaite and dravite.

所述电气石是指铁电气石、锂电气石、镁电气石中的一种或几种；

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The said tourmaline is one or more of the kinds such as iron-tourmaline, elbaite and dravite.

所述电气石是指铁电气石、锂电气石、镁电气石中的一种或几种；

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