Quarterly Journal of the Chemical Society of London |
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Page 1408
... pickeringite although all specimens of this mineral which we have examined contained excess of MgSO4,7H2O . Full analyses have been made of specimens of the mineral from widely differing localities and all disclosed a small excess of ...
... pickeringite although all specimens of this mineral which we have examined contained excess of MgSO4,7H2O . Full analyses have been made of specimens of the mineral from widely differing localities and all disclosed a small excess of ...
Page 1412
... pickeringites it occurs partly as a crystalline film between the crystal fibres of the pickeringite , but mainly as minute well - formed crystals , which shows that it does not represent fine alunite dust blown in from outside but that ...
... pickeringites it occurs partly as a crystalline film between the crystal fibres of the pickeringite , but mainly as minute well - formed crystals , which shows that it does not represent fine alunite dust blown in from outside but that ...
Page 1413
... pickeringite MgAl , ( SO ) , 22H2O , distribution of the Al2O , between these two salts was calculated and is shown in the table . The amount of MgO in the minerals was in all cases greater than that required to form pickeringite with ...
... pickeringite MgAl , ( SO ) , 22H2O , distribution of the Al2O , between these two salts was calculated and is shown in the table . The amount of MgO in the minerals was in all cases greater than that required to form pickeringite with ...
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Common terms and phrases
absorption acetic anhydride acetone acetyl added alcohol alkaline alunite Amer amine ammonia anhydrous anilide aqueous sodium atom benzene boiling bromine trifluoride Calc carbonate CHâ‚‚ Chem chloroform colour colourless needles compound condensation containing cooled crystallised crystals cyanide cyclisation D.Sc decomp derivatives dilute dissolved distilled dried equiv ester ethanol ethyl acetate evaporated EXPERIMENTAL extracted with ether filtered filtrate fluoride formation formed Found fraction gave give heated under reflux hydrochloric acid hydrogen chloride hydrolysis iodide iodine ions isolated kcals ketone light petroleum b. p. liquid melting method methyl minutes mixed m. p. molecule nitrate nitrile nitrogen obtained oxalate oxide oxime oxygen pickeringite picrate piperidine potassium potassium hydroxide precipitate prepared prisms pyridine reductive dissolution removed requires residue room temperature salt semicarbazone separated sodium hydroxide solid soluble solvent specimen sulphate sulphuric acid values washed xylose yellow needles yield