Granite

an unstratified rock, normally consisting of three simple min- 2rals, felspar, quartz, and mica, or, in Dana’s nomenclature, of orthoclase, quartz, and mica. Granite is of much economic value as a building stone. The production of granite in the United States in 1900 was valued at $12, 675,617. The leading States jn its production were Maine, Ma achusetts, Vermont, and Delaware.