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Ordinarily, the term "mineral" is considered to include metallic ores,jewels, hydrocarbons such <br /> as coal, asphaltum and petroleum, useful rocks such as shale, granite, limestone and marble, and <br /> other miscellaneous materials such as feldspar, fluorspar, building sand, gypsum, silica rock, <br /> borax, sulphur, alum, carbonate and nitrate of soda, and salt. However, the.term ordinarily does <br /> not include commonplace materials such as clay, sand, gravel, soil, and water. <br />