Cummingtonite (/ˈkʌmɪŋtənaɪt/ KUM-ing-tə-nyte) is a metamorphic amphibole with the chemical composition (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2, magnesium...
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anthophyllite, riebeckite, the cummingtonite/grunerite series, and the actinolite/tremolite series. The cummingtonite/grunerite series is often termed...
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NaCa2(Si3O8)(OH) Amphibole group Anthophyllite – (Mg,Fe)7Si8O22(OH)2 Cummingtonite series Cummingtonite – Fe2Mg5Si8O22(OH)2 Grunerite – Fe7Si8O22(OH)2 Tremolite series...
20 KB (1,897 words) - 18:21, 16 July 2024
calcite, dolomite, grossular, wollastonite, talc, diopside, forsterite, cummingtonite, riebeckite and winchite. Tremolite was first described in 1789 for...
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with formula Fe7Si8O22(OH)2. It is the iron endmember of the grunerite-cummingtonite series. It forms as fibrous, columnar or massive aggregates of crystals...
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brown asbestos, is a trade name for the amphiboles belonging to the cummingtonite-grunerite solid solution series, commonly from South Africa, named as...
113 KB (11,974 words) - 01:08, 31 December 2024
appeared twice on the BBC panel show QI, in series C, episode 2, ("Cummingtonite", 2005) and series E episode 11, ("Endings", 2007). From 2013 until...
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Crossite (not approved by IMA) Cryolite Cryptomelane Cubanite Cumengeite Cummingtonite Cupalite Cuprite Cuprosklodowskite Cuprospinel Curite Cuspidine Cyanotrichite...
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the nickname "faux-amphibolite". The cummingtonite amphibolite displays gneissic foliation, with cummingtonite, quartz, biotite and plagioclase feldspar...
14 KB (1,610 words) - 08:53, 2 January 2025
leads west, then south, 21 miles (34 km) to Huntington. The mineral cummingtonite was first found in this town and was named after it. As of the census...
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Magnesiocummingtonite is the magnesium rich endmember of the cummingtonite-grunerite series of the amphibole group of minerals, with the following composition:...
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form is known as crocidolite or "blue asbestos", and brown asbestos, a cummingtonite-grunerite solid solution series. The United States Environmental Protection...
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of chlorite and amphiboles (typically tremolite, anthophyllite, and cummingtonite, hence its obsolete name, magnesiocummingtonite), and traces of minor...
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magnesium iron inosilicate hydroxide. Anthophyllite is polymorphic with cummingtonite. Some forms of anthophyllite are lamellar or fibrous and are classed...
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Brydon Rich Hall Rich Hall 30 September 2005 (2005-09-30) 2.33 26 2 "Cummingtonite" Andy Hamilton Doon Mackichan Arthur Smith Andy Hamilton...
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Superior. The tailings contained 40% of the amphibole group mineral series cummingtonite-grunerite, which may form asbestiform particles. A small fraction of...
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Magnesium iron silicate hydroxide may refer to: Anthophyllite Cummingtonite Serpentine group This disambiguation page lists articles associated with the...
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aromatic hydrocarbon used in the production of phenol and acetone. Cummingtonite ((Mg,Fe2+)2(Mg,Fe2+)5Si8O22(OH)2), a magnesium-iron silicate hydroxide...
44 KB (1,916 words) - 10:37, 6 January 2025
assemblages: In metabasites: hornblende + plagioclase ± epidote, garnet, cummingtonite, diopside, biotite In metapelites: muscovite + biotite + quartz + plagioclase...
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the tailings not only polluted Lake Superior but that they contained cummingtonite-grunerite. This substance is found in asbestos, a known carcinogen....
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along with its ternary solid solution series members tremolite and cummingtonite so that the thermodynamic properties of its assemblage can be applied...
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Calcio-olivine Caol Čejkaite Čej Chlorapatite Clap Cobaltaustinite Caus Cummingtonite Cum Calciopetersite Cpts Celadonite Cel Chlorargyrite Cag Cobaltite...
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magnesian bluish-green Tremolite-cummingtonite-grunerite amphiboles in greenschist facies rocks Anthophyllite-cummingtonite amphibole in weakly carbonated...
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metamorphic rocks in association with garnet, cordierite, anthophyllite, cummingtonite, sapphirine, sillimanite, kyanite, quartz, staurolite and biotite. Gedrite...
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minerals are found intergrown with the amphiboles anthophyllite and cummingtonite in sprays up to 5 cm long. They are all colorless to pale pinkish-brown...
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chlorite, tremolite, and other magnesian amphiboles (anthophyllite, cummingtonite, gedrite, etc.). For example, the typical flow facies (see below) may...
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argue that it is between 4.4 Ga and 3.8 Ga old. The 4.4-Ga-old ages for cummingtonite-amphibolites in NGB do not, by their low isotopic ratio of 142-Neodymium to...
35 KB (4,096 words) - 03:21, 29 September 2024
Bonin Islands, Japan Comendite: Comende, San Pietro Island, Sardinia Cummingtonite: Cummington, Massachusetts Dunite: Dun Mountain, New Zealand Essexite:...
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type locality kanoite occurs along a joint that cuts a pyroxmangite-cummingtonite metamorphic rock in a manganese ore deposit. The region has undergone...
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p., 1893) 3.DB.20 [1,089] [1,090] [1,091] (Pb21Cu20Cl42(OH)40·6H2O) Cummingtonite [Mg-Fe-Mn-amphibole: IMA2012 s.p., 1824] 09.DE.05 [1,092] [1,093] [1...
103 KB (6,708 words) - 17:15, 19 June 2024