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FELDSPAR AND NEPHELIME SYENITE

机译:FELDSPAR和NEPHELINE硒

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摘要

U.S. feldspar output sold or used in 2004 was estimated to be 790 kt (871,000 st), valued at 43 million dollars free-on-board plant. This was below 2003 and about the same volume as 2002. The strong housing market in the United States maintained demand for ceramic tiles, plumbing fixtures, and fiberglass insulation requiring feldspar and shipments of glass containers increased by about 4 percent. Imports of ceramic tiles and plumbing fixtures continue to increase, taking the place of U.S. produced goods, and the feldspar required to make them. Output included flotation concentrates, feldspar content in feldspar-silica mixtures, potash feldspar and aplite. North Carolina was the leading feldspar-producing state during 2004. It produced more than 40 percent of the U.S. total. Other producing states included California, Georgia. Idaho, Oklahoma, South Dakota and Virginia. Ten companies had 13 mine-plant operations.
机译:2004年出售或使用的美国长石产量估计为790 kt(871,000 st),价值4,300万美元的船上免费工厂。这低于2003年,与2002年持平。美国强劲的住房市场保持了对瓷砖,卫生设备和需要长石的玻璃纤维保温材料的需求,玻璃容器的发货量增长了约4%。瓷砖和卫生设备的进口量持续增长,取代了美国生产的产品以及制造它们所需的长石。产量包括浮选精矿,长石-二氧化硅混合物中的长石含量,钾长石和云母。 2004年,北卡罗来纳州是长石生产的主要州。它的产量占美国总量的40%以上。其他产州包括加利福尼亚,乔治亚州。爱达荷州,俄克拉荷马州,南达科他州和弗吉尼亚州。十家公司拥有13个矿山工厂作业。

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