Rowley Rag
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Rowley Rag was a volcanic Dolerite stone quarried in the stone quarries (known locally as the 'Quacks') of the Rowley Hills in the West Midlands of the United Kingdom. During the 1980s and 1990s, the quarry on Rowley Hill in Rowley Regis was used as a landfill site. There is now a golf driving range on top of this disused quarry and landfill.
The main use of the Rowley Rag stone was in the production of road surfaces.
A public house in the village of Whiteheath was named after this rock, highlighting the importance of this naturally occurring product in this area of the Black Country.
William Withering, a member of the Lunar Society, studied the chemical composition of Rowley Rag and gave a paper including this study to the Royal Society in the 18th century.