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Is this material limestone or marble? According to the website of the Noir Belge quarry here (and you would think they'd know) it's marble. Richerman ( talk) 15:22, 18 May 2009 (UTC) reply

They should know ... but they obviously don't. From a geologist's point of view, there is not a single marble in Belgium. -- Jo ( talk) 09:33, 20 May 2009 (UTC) reply

Basic information to add to this article: Noir Belge's chemical composition, specifically which chemical components give it its characteristic black color. This is information anyone might expect to find in this article, yet it's not explained in its current version. 98.123.38.211 ( talk) 23:17, 6 December 2023 (UTC) reply