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Email:[email protected]Yb natural black muscovite mica schist display green tourmaline crystal spray in lepidolite zoned muscovite book mt mica maine brand new tourmaline crystal 5000 crushing of mica ore 911metallurgist crushing of mica prior to pneumatic processing technique were studied for concentrating coarse mica feldspar mines in south africa
Get PriceMining for tourmaline began in the 1950s when jose neves and his brother antonio de assis neves started what is now the cruzeiro tourmaline mine the brothers had been mining mica in the area and taking it to governador valadares to sell they also bought and sold the production of other mica miners
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Get PriceTourmaline sources brazil has been the worlds leading source of tourmaline for nearly 500 years in the 1500s portuguese explorers obtained green and blue tourmaline from indigenous people and from panning streams in search of thought that these colorful stones were emeralds and sapphires and sent them back to portugal where they were cut into gems and used to make jewelry for
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Get PriceRecords suggest that from 1898 until 1914 the himalaya mine in san diego county was the worlds largest producer of tourmaline in 1904 production from the mine was at least 55 metric tons in 1989 84 years later a single pocket in the mine was discovered that produced 500 kilograms of tourmaline
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Get PriceMining for tourmaline began in the 1950s when jose neves and his brother antonio de assis neves started what is now the cruzeiro tourmaline mine the brothers had been mining mica in the area and taking it to governador valadares to sell they also bought and sold the production of other mica miners
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