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Limestone is a geological rock formed primarily from calcium carbonate and in water. It is produced principally during periods when there is a high proportion of carbon dioxide in the atmosphere. It varies greatly in its hardness and in the materials included in it so its commercial uses vary.
This category is interpreted broadly to include carbonate minerals and some manufactured products of these.
This category has the following 5 subcategories, out of 5 total.
The following 163 pages are in this category, out of 163 total. This list may not reflect recent changes (learn more).