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Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula K(Mg,Fe) 3 AlSi 3 O 10 (F,OH) 2.It is primarily a solidsolution series between the ironendmember annite, and the magnesiumendmember phlogopite; more aluminous endmembers include siderophyllite and eastonite.Biotite was regarded as a mineral species by the International
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Haematite. Oligist. Miox. Iron, specular. Red Iron ORE. CCRIS 4377. HSDB 2964. EINECS 2152754. ACMC20p1cs. EC 2152754. DTXSID0029632. AKOS025296075. Haematite, underground mining with exposure to radon Haematite and ferric oxide] FT0627296. Q103223. Q419170. Haematite, underground mining with exposure to radon. UNII2RF6EJ0M85 component
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Occurrence Secondary mineral in the oxidized zone of ore deposits Crystal or stone size To 3 cts Comments Rare (crystal), poor jewelry material, but a collector's item; brilliant fluorescence in light yellow to white when free of iron, green is non fluorescent and can be distinguished from smithsonite by
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Oct 24, 2019· Mineral Minerals are naturally occurring substances which have a uniform composition. Extraction of Iron from Haematite (Fe 2 O 3) Haematite ore is heated with carbon to be reduced to iron metal. It is harder than the constituent metals.
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Oct 31, 2019· A mineral may be a single compound or a complex mixture of various compounds of metals found in the earth, e.g. Clay Al 2 O 3. 2SiO 2. 2H 2 O is the mineral of Aluminium. Question 7. Write the increasing order of radii of the following species. (a) Na, Na +, Cl, Cl (b) Li, Na, K, Rb Answer (a) Na +, Cl, Na, Cl (b) Li, Na, K, Rb
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Aug 30, 2016· Furthermore, semiconductive minerals, including haematite (αFe 2 O 3) and magnetite (Fe(II)Fe(III) 2 O 4), can function as conductors to transfer electrons between different microbial species 9 .
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(e) Alloys are harder than the constituent metals. Alloys are more resistant to corrosion. Alloys are stronger than the metals. Alloys have lower melting point than constitute metals. Multiple Choice Questions (MCQs) 62. An ore of manganese metal is (a) Bauxite (b) Haematite (c)
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Aug 27, 2020· Write the constituent metals of brass. Answer An amalgam is an alloy in which one of the metals is mercury. Brass is an alloy of copper and zinc (Cu and Zn). It contains 80% copper and 20% zinc. Question 16. Every ore is a mineral but not every mineral is an ore. Explain. Answer Every mineral is not suitable for the extraction of the metal.
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Define mineral. mineral synonyms, mineral pronunciation, mineral translation, English dictionary definition of mineral. chlorite a generally green or black mineral; it occurs as a constituent of many rocks typically in the form of a flat crystal. greenockite, gummite, gypsum, halite, harmotome, hematite or
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A resistant and enduring mineral found in many rocks (e.g. granite, sandstone). It is the principal constituent of sands and silts, and the most abundant soil mineral. It occurs as equidimensional hard grains. haematite A red iron (ferric) oxide resistant to change, results from extreme weathering.
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