Briciau Anhydrin
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Briciau Dur Llif
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Briciau Clai Tân
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Briciau Alwmina Uchel
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Briciau Silica
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Brics Silica Mullit
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Briciau Mullit a Briciau Sillimanit
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Briciau Magnesia
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Briciau Crom Magnesia
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Briciau Carbon Magnesia
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Briciau Calsiwm Magnesia
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Briciau Spinel Alwmina Magnesia/Briciau Spinel Haearn Magnesia
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Briciau Zirconia Magnesia
