For more than a century, the Four Peaks mine in Maricopa County, Arizona, has produced gem-quality amethyst from crystal-lined or crystal-filled cavities and fractures in a brecciated quartzite host ...

Brazil is currently the leader in overall production of amethyst. This article describes the author's visits to three of Brazil’s most important mining areas: Marabá, Pau d’Arco, and Rio Grande do Sul ...

The three-meter tall amethyst geode - a hollow rock filled with ... The Empress had a special crate constructed tightly around her, at the mine in Uruguay, and this was then secured in her own ...

The actor shot to fame at 14 for portraying Effy in Skins. Now she’s reprising her role as Susie Glass in season two of The ...

Five miners died on Monday and four were injured in an accident in a coal mine in the northern Spanish region of Asturias, the regional emergency services said. Two more workers were unharmed.

She saw many safety improvements over the years, and always felt grateful that she could call the local Mine Safety and Health Administration office whenever she wondered whether a rule was being ...