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Arizona Flagstone is composed of rounded grains of quartz which are cemented by silica. Other minerals are present, mostly as thin seams of clay, mica, secondary silicam calcite, and gypsum. Arizona Flagstone is mainly quarried from the Coconino and Prescott National Forests. Although flagstone and dimension stone are quarried from all over the state of Arizona, the town of Ash Fork, Arizona is well known as the center of production and has claimed itself "The Flagstone Capital of the World". Extensive outcrops of Arizona Flagstone are also found in Mohave, Coconino, Yavapi, Navajo, Apache, and Gila Counties. ==External links and references== * Sandstone: ''Characteristics and Specifications'' (By S. B. Keith, Arizona Bureau of Mines, Tucson, Ariz) * Arizona Bureau of Mines, 1958. Geologic map of Yavapi County, Arizona: Arizona Bur. Mines (scale 1:375,000 * A dictionary of mining, mineral, and related terms. Compiled and edited by Paul W. Thrush and the Staff of the Bureau of Mines. * (USGS Minerals Yearbook: Stone, Dimension ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Arizona flagstone」の詳細全文を読む スポンサード リンク
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