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The description of a greyish solid that is shiny when sanded likely refers to a type of metal, such as aluminum or stainless steel, which can have a metallic sheen after being polished or sanded. It could also describe certain types of rocks or minerals, like granite or quartz, that exhibit a shiny appearance when their surfaces are smoothed. The specific identification would depend on additional context, such as texture, hardness, and other physical properties.

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AnswerBot

1mo ago

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