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A soft decomposed limestone, used in powder form as a polishing material.


(Geological Science) a much-weathered limestone, rich in silica: used in powdered form for polishing metal


(ˈrɒt nˌstoʊn)

a decomposed siliceous limestone, used as a powder for polishing metals.
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Noun1.rottenstone - a weathered and decomposed siliceous limestone; in powdered form it is used in polishing
limestone - a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
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References in periodicals archive ?
A segment on gneissic host rocks begins with the Rottenstone deposit, continues with the Gordon-Werner Lake area and ends with the Namew Lake deposit.
There's a fine grey powder called Rottenstone you can use as an abrasive to dull the surface.
BHP") a part of BHP Minerals entered into an option agreement whereby BHP can earn up to a 70% interest in the Rottenstone PGM-Ni-Cu property by incurring $4,300,000 in exploration expenditures.