LumachelLu"ma*chel\, Lumachella \Lu`ma*chel"la\, n. [F. lumachelle, It. lumachella, fr. lamachella a little snail, dim. of lumaca a snail, fr. L. limax, -acis.] (Min.) A grayish brown limestone, containing fossil shells, which reflect a beautiful play of colors. It is also called fire marble, from its fiery reflections.
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