| 单词 | ilmenite |
| 例句 | Native gold, native platinum, zircon, ilmenite, rutile, magnetite, diamonds, and other gemstones can be found in placers. An Introduction to Geology 2017-01-01T00:00:00Z Rio Tinto's South African subsidiary Richards Bay Minerals extracts and refines heavy mineral sands and produces ilmenite, rutile, and zircon at its site in northern KwaZulu-Natal province. South Africa urges Rio Tinto workers to report cases of discrimination 2022-02-03T05:00:00Z He pointed to Bluejay’s plans to begin mining ilmenite, an ore that contains titanium, from a site hundreds of miles north of Narsaq. The World Wants Greenland’s Minerals, but Greenlanders Are Wary 2021-10-01T04:00:00Z The railroad was needed to carry ilmenite, a mineral used to make titanium for armored vehicles, from mines in Tahawus. Empty Rail Cars Roll Into the Adirondacks, Stirring Controversy 2017-11-13T05:00:00Z The other major mining operator is London-listed Rio Tinto, holding 80 percent of a mine producing ilmenite, an ingredient used in paints, paper and plastics. Madagascar voters want presidential run-off to end crisis 2013-12-18T12:08:40Z One of his companies this month will start exporting ilmenite to China for manufacturing lightweight alloy for aircraft parts and paint pigments. Australia's mining boom rolls on for Chinese entrepreneur in the outback 2013-08-25T07:31:18Z Her husband opened the doors to multi-nationals to exploit Madagascar's deposits of oil, gold, cobalt, nickel, chrome, uranium and ilmenite, a titanium ore. Wife of ousted Madagascar leader stands by bid for power 2013-06-14T09:38:29Z Rajoelina said he feared the island, a source of cobalt, nickel and ilmenite, was on a path to civil war. Madagascar president sets out terms for quitting election race 2013-05-25T16:10:45Z Zircon is mainly used in the ceramics industry, while ilmenite is related to titanium. Kenya's first big mine to spur sector investments 2012-08-16T15:30:20Z Among the accessory minerals may be mentioned apatite, magnetite, ilmenite, picotite and garnet. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z Before leaving China, Ren traded "specialty" metals like tungsten, molybdenum and ilmenite. Australia's mining boom rolls on for Chinese entrepreneur in the outback 2013-08-25T07:31:18Z Their essential minerals are those of basalt, viz. olivine, augite and plagioclase felspar, while hornblende, ilmenite, apatite and biotite are their commonest accessory ingredients. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 "Dodwell" to "Drama" The other minerals found in the concentrates are pebbles and fragments of pyrope, zircon, cyanite, chrome-diopside, enstatite, a green pyroxene, mica, ilmenite, magnetite, chromite, hornblende, olivine, barytes, calcite and pyrites. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" Certain minerals, such as magnetite, ilmenite, spinel, corundum, etc., are often found as primary segregations within the mass of igneous rock. The Economic Aspect of Geology Segregations of iron ores, such as ilmenite, usually with pyroxene or olivine, occur in association with some gabbro and anorthosite masses. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" 2011-08-24T02:00:20.690Z Additional minerals found in the coarse schists are calcite, ilmenite, skeleton oblivine, biotite, and hematite. History and Comprehensive Description of Loudoun County, Virginia The majority of these bowlders have been derived from the immediate vicinity, but many consisting of a coarse pegmatite carrying considerable quantities of ilmenite were observed. The Long Labrador Trail Further, the ilmenite, which is the most characteristic associate of the diamond in blue ground, and other of the accompanying minerals, may have come from basic rocks of a different nature. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" Rutile and ilmenite both have high specific gravity and are little affected by weathering. The Economic Aspect of Geology The result of our careless working, however, was not successful; the normal ilmenite, black sand of magnetic iron, took the place of gold-dust. The Land of Midian — Volume 1 In general the mineral is recovered on a commercial scale only from placers, where it has been concentrated along with other dense, insoluble minerals such as zircon, garnet, ilmenite, and sometimes gold. The Economic Aspect of Geology Titaniferous magnetites, formed in many basic igneous rocks by the segregation of certain iron-bearing materials into irregular masses, contain large quantities of ilmenite which are not commercially available under present metallurgical processes. The Economic Aspect of Geology |
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