How To Use Cassiterite In A Sentence
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Arsenopyrite, cassiterite, molybdenite, wolframite, uraninite, and several of the common sulfides have all been observed at various locations.
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It occurred in weathered material with colorless transparent cassiterite, which is thought to have been derived from the oxidation of stannite.
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Congo has diamonds, gold, copper, cobalt, cassiterite (tin ore) and coltan as well as timber, coffee and oil, little of which has benefited the Congolese, since the brutal rule of Belgium during colonial times.
Evelyn Leopold: Congo Massacres: First Revenge, Then Blood Money
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Arsenopyrite, cassiterite, molybdenite, wolframite, uraninite, and several of the common sulfides have all been observed at various locations.
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They collected several pegmatite pockets in which topaz was associated with both clear and smoky quartz, microcline, albite, muscovite, fluorite, and cassiterite.
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In the Democratic Republic of Congo, armed groups force villagers to mine minerals like wolframite and cassiterite.
Stanford Students Take Stand Against 'Conflict Minerals'
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On April 23rd, Republican senator Sam Brownback introduced the Congo Conflict Minerals Act of 2009, cosponsored by senators Russ Feingold and Dick Durbin, which would require American companies mining coltan, cassiterite, and wolframite to report annually to the Security and Exchange Commission (SEC), the agency that regulates American financial markets, to disclose the country of origin of the minerals to the Securities and Exchange Commission.
Global Voices in English » New bill to increase oversight of American mining companies in DRC
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Feldspar has been hydrothermally altered by a fluorine-rich water vapor to quartz, mica (usually lithian), topaz and/or tourmaline with fluorite, cassiterite, molybdenite, rutile, and wolframite as typical accessory minerals.
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They collected several pegmatite pockets in which topaz was associated with both clear and smoky quartz, microcline, albite, muscovite, fluorite, and cassiterite.
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The chief commodity sought is tin, as fine-grained cassiterite in vein swarms related to the emplacement of granitic rocks within sedimentary carbonates.
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This is especially important for those valuable minerals which exhibit a brittle to very brittle tenacity, such as cassiterite, sphalerite and the tungsten minerals scheelite and wolframite.
Chapter 20
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A greisen is a quartz - mica aggregate containing significant amounts of cassiterite, wolframite, fluorite, topaz, rutile, and tourmaline.
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Sphalerite, cassiterite (tin ore) and scheelite are only a few examples of this type of brittle mineral ore (see Table).
Chapter 20
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A month ago, TV5MONDE found that armed elements were systematically pilliaging cassiterite in Walikale [a territory in North Kivu] with the complicity of Kinshasa.
Global Voices in English » New bill to increase oversight of American mining companies in DRC
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Cassiterite is also known as tinstone, and is an important tin ore.
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The global coltan price has collapsed, so now they focus hungrily on cassiterite, which is used to make tin cans and other consumer disposables.
Information Liberation
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Congo is awash with gold, diamonds and metals such as cassiterite and coltan used to weld small pieces together in electronics.
ANC Daily News Briefing
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It occurs in more than ten minerals, including cassiterite and stannite.
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The dike is characterized by a greater abundance of muscovite than biotite; it also contains columbite-tantalite, cassiterite, beryl, spodumene, lepidolite, montebrasite, pollucite, and tourmaline.
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The area has been a prolific source of smoky quartz, amazonite, occasional topaz, and other accessory minerals, including albite, fluorite, phenakite, columbite, cassiterite, goethite, and many others.
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One of the most sought after minerals on Gyoujayama, however, is cassiterite.
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The area has been a prolific source of smoky quartz, amazonite, occasional topaz, and other accessory minerals, including albite, fluorite, phenakite, columbite, cassiterite, goethite, and many others.
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The principal ore of tin is the mineral cassiterite (or tinstone), SnO2, found abundantly on Phuket Island.
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The minerals in question—cassiterite, columbite-tantalite, gold and wolframite—are widely used in consumer electronics and other products, although Congo supplies no more than 20% of global demand for these raw materials.
Can Annual Reports Save Lives?
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The flotation experimental results showed that methyl benzyl arsonic acid is an effective collector for wolframite and cassiterite slime.
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Building on the work of a coalition of a dozen major humanitarian organizations and industry pioneers, the bill establishes a new mechanism that will limit the ability of armed groups to profit from the illicit mining and sale of cassiterite, coltan, and wolframite and other "conflict minerals.
Rep. Howard L. Berman: Why We Should Care About the Congo
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A greisen is a quartz - mica aggregate containing significant amounts of cassiterite, wolframite, fluorite, topaz, rutile, and tourmaline.
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Arsenopyrite, cassiterite, molybdenite, wolframite, uraninite, and several of the common sulfides have all been observed at various locations.
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Crystals sometimes exhibit visible inclusions of micas and tourmaline as well as rarer minerals, such as cassiterite.
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Fifteen existing villages of shifting cultivators, and mining settlements for gold, cassiterite and coltan were located in the west section of the Park, though neither they nor the indigenous pygmies were consulted when it was created; and several villages in the buffer zone, where the boundary had never been defined, were sources of conflict.
Kahuzi-Biéga National Park, Democratic Republic of Congo
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A greisen is a quartz - mica aggregate containing significant amounts of cassiterite, wolframite, fluorite, topaz, rutile, and tourmaline.
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The results indicate that collector composed of SHA and P86 is suitable for the flotation of cassiterite ; the other composite collectors are not suitable for the flotation of cassiterite .
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In certain exceptional cases this may contain some unaltered cassiterite, which is easily recognised by its appearance.
A Text-book of Assaying: For the Use of Those Connected with Mines.
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The principal mineral resource is cassiterite (a tin ore), but exports are at a standstill since the collapse in world tin prices.
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A greisen is a quartz - mica aggregate containing significant amounts of cassiterite, wolframite, fluorite, topaz, rutile, and tourmaline.
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The quartz and albite contain small dark inclusions of cassiterite and columbite-tantalite-group minerals.
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The minerals in question—cassiterite, columbite-tantalite, gold and wolframite—are widely used in consumer electronics and other products, although Congo supplies no more than 20% of global demand for these raw materials.
Can Annual Reports Save Lives?
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The discovery of a pocket of cassiterite here in 1915 created a small flurry of interest in tin; however, further exploration was unproductive.
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This is especially important for those valuable minerals which exhibit a brittle to very brittle tenacity, such as cassiterite, sphalerite and the tungsten minerals scheelite and wolframite.
Chapter 20
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On April 23rd, Republican senator Sam Brownback introduced the Congo Conflict Minerals Act of 2009, cosponsored by senators Russ Feingold and Dick Durbin, which would require American companies mining coltan, cassiterite, and wolframite to report annually to the Security and Exchange Commission (SEC), the agency that regulates American financial markets, to disclose the country of origin of the minerals to the Securities and Exchange Commission.
Global Voices in English » New bill to increase oversight of American mining companies in DRC
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The dike is characterized by a greater abundance of muscovite than biotite; it also contains columbite-tantalite, cassiterite, beryl, spodumene, lepidolite, montebrasite, pollucite, and tourmaline.
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This covers the tin and fluorite mines of the Bushveld Complex, and there are samples of cassiterite from the Rooiberg mine, fluorite from the Buffalo Fluospar mine, and a smaltite specimen from Buffelsfontein, Groblersdal.
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They collected several pegmatite pockets in which topaz was associated with both clear and smoky quartz, microcline, albite, muscovite, fluorite, and cassiterite.
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Other important minerals include tin-bearing cassiterite, iron, tin, coal, phosphates, gold, and salt.
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All cassiterite crystals exhibit twinning, and most are black with metallic luster.
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The cassiterite occurs as pale brown, fine-grained vein fillings and is not of much interest to collectors as specimens.
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There are exceptions, such as German manganite, some Bolivian and Chinese cassiterite, Russian ilvaite, Brazilian and Namibian schorl, Panasqueira ferberite, and rutile, especially that from Graves Mountain, Georgia.
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~ Tin is found in nature chiefly as the oxide (SnO_ ), called cassiterite or tinstone.
An Elementary Study of Chemistry
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Several years ago a Colorado mineral dealer was alleged to have sold cassiterite fraudulently labeled as being from this area.
