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blue-johnBLU'E-JOHN, n. Among miners, fluor spar, a mineral, found in the mines of Derbyshire, and fabricated into vases and other ornamental figures. |
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blue-johnBLU'E-JOHN, n. Among miners, fluor spar, a mineral, found in the mines of Derbyshire, and fabricated into vases and other ornamental figures. |