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Gem mines in the Pala District still produce tourmaline, with the pink variety as the regional specialty. China’s Empress Dowager Cixi (1860-1908) was said to have valued the pink tourmaline of Pala to be used for carving buttons and other fashion accessories which fueled a boom for pink tourmaline lasting from about 1901–1911. [4]
Tourmaline Oil is a Canadian energy company engaged in the exploration, development, and extraction of crude oil and natural gas. It is headquartered in Calgary , Alberta in Canada. A major natural gas producer, it became the largest natural gas producer in Canada in 2021.
Today this tourmaline locality (type locality for dravite) at Dobrova (near Dravograd), is a part of the Republic of Slovenia. [9] Tschermak gave this tourmaline the name dravite, for the Drava river area, which is the district along the Drava River (in German: Drau, in Latin: Drave) in Austria and Slovenia.
Rubellite is the red or pink variety of tourmaline and is a member of elbaite. Rubellite is also the rarest gem in its family. [2] It is occasionally mistaken for ruby. [3] These gems typically contain inclusions. [4] Notable countries where rubellite can be mined include Afghanistan, Brazil, Madagascar, Myanmar, Nigeria, Russia, and the United ...
Silver; one of the largest silver mines in the Middle Ages; most important financial source for Fugger and the Habsburg dynasties 47°21′13″N 11°43′39″E / 47.3536°N 11.7275°E / 47.3536; 11.7275 ( Schwazer Silberbergwerk
Egyptian Empire. In 2002, the journal Nature published a game-changing report that revealed an incredible economic disparity in ancient Egypt. The vast majority of ancient Egyptians, it turns out ...
Tsilaisite is a manganese rich variety of elbaite tourmaline. [2] It is also known as Tsilaizite. [3] Tsilaisite is related Fluor-tsilaisite. [4] The gem is named after the location it was first found. [5]
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