National Minerals Information Center

Dimension Stone Statistics and Information

Fletcher Granite’s Chelmsford Grey Quarry

Extraction of granite blocks from Fletcher Granite’s Chelmsford Grey Quarry in the late 1990's/early 2000's

(Credit: Thomas Dolley, USGS. Public domain.)

Dimension stone can be defined as natural rock material quarried for the purpose of obtaining blocks or slabs that meet specifications as to size (width, length, and thickness) and shape.  Color, grain texture and pattern, and surface finish of the stone are normal requirements.  Durability (essentially based on mineral composition and hardness and past performance), strength, and the ability of the stone to take a polish are other important selection criteria.

Although a variety of igneous, metamorphic, and sedimentary rocks are used as dimension stone, the principal rock types are granite, limestone, marble, sandstone, and slate.  Other varieties of dimension stone that are normally considered to be special minor types include alabaster (massive gypsum), soapstone (massive talc), and various products fashioned from natural stone.

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Thomas Dolley

USGS Mineral Commodity Specialist
National Minerals Information Center
Phone: 703-648-7710