Ganister meaning

găn'ĭ-stər
A hard, siliceous sedimentary rock sometimes found underlying coal beds, used in making brick for refractory linings of metallurgical furnaces.
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A fine-grained quartzite used to line refractory furnaces.
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A mixture of fire clay and ground quartz, used to line metallurgical furnaces.
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A hard, fine-grained sandstone, used in manufacturing silica bricks for lining furnaces.
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Origin of ganister

Origin unknown