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Books Bücher 1 - 10 von 12 in It is an exceptional case when there is exact agreement between the weight of fluoride...
" It is an exceptional case when there is exact agreement between the weight of fluoride and sulphate, and with the small amounts usually met in rocks the error may be an appreciable one in percentage of fluorine, though of no great significance otherwise. "
Bulletin - United States Geological Survey - Seite 187
von Geological Survey (U.S.) - 1910
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The Chemical News and Journal of Industrial Science; with which is ..., Band 83

1901
...fluoride into sulphate, by the formula: — CaS04— CaF2 . 2F : : Diff. between impure CaSO4 and CaFj : x. It is an exceptional case when there is exact agreement...fluorine, though of no great significance otherwise. There is no qualitative test which will reveal with certainty the presence of fluorine in rocks. Heating...
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The Chemical News and Journal of Industrial Science; with which is ..., Band 78

1898
...CaS04-CaFj : 2F : : diff. between impure CaS04 and CaF2 : x. It is an exceptional case when there is exacl agreement between the weight of fluoride and sulphate,...fluorine, though of no great significance otherwise. There is no qualitative test which will reveal with cer* tainty the presence of fluorine in rocks....
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Analyses of Rocks, with a Chapter on Analytical Methods ..., Band 8,Ausgabe 148

Frank Wigglesworth Clarke, William Francis Hillebrand - 1897 - 306 Seiten
...fluoride into sulphate, by the formula: CaSO4 — CaF2 : 2 F : : Difl'. between impure CaSO4 and CaF2 : x. It is an exceptional case when there is exact agreement...fluorine, though of no great significance otherwise. There is no.qualitative test which will reveal with certainty the presence of fluorine in rocks. Heating...
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Survey of the Northwestern Boundary of the United States ..., Band 8,Ausgabe 174

Marcus Baker - 1900 - 78 Seiten
...fluoride into sulphate, by the formula: CaSO4 - CaF2 : 2 F : : Diff. between impure CaSO4 and CaF2 : x. It is an exceptional case when there is exact agreement...fluorine, though of no great significance otherwise. There is no qualitative test which will reveal with certainty the presence of fluorine in rocks. Heating...
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The Areas of the United States, the States, and the Territories

Henry Gannett - 1906 - 9 Seiten
...fluoride into sulphate, by the formula. CaSO,-CaF2 : 2 F : : Diff. between impure CaSO, and CaF2 : x. It is an exceptional case when there is exact agreement...weight of fluoride and sulphate, and with the small amountsusually met in rocks the error may be an appreciable one in percentage of fluorine, though of...
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Bulletin, Ausgabe 9

1907
...fluoride into sulphate, by the formula: "CaSO4— CaF2 : 2F : : Diff. between impure CaSO4 and CaF2 : x. "It is an exceptional case when there is exact agreement between the weight of fluorine and sulphate, and with the small amounts usually met in rocks the error may be an appreciable...
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Bulletin, Ausgabe 9

1907
...fluoride into sulphate, by the formula: "03804— CaF2 : 2F : : Diff. between impure CaS04 and CaF2 : x. "It is an exceptional case when there is exact agreement between the weight of fluorine and sulphate, and with the small amounts usually met in rocks the error may be an appreciable...
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Bulletin, Ausgabe 9

1907
...fluoride into sulphate, by the formula: "CaSO 4 —CaF 2 : 2F : : Diff. between impure CaS0 4 and CaF 2 : x. "It is an exceptional case when there is exact agreement between the weight of fluorine and sulphate, and with the small amounts usually met in rocks the error may be an appreciable...
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Quantitative Chemical Analysis, Band 2

C. Remigius Fresenius - 1915
...fluoride into sulphate, by the formula: CaSO 4 —CaFj: 2F :: Diff. between impure CaSO, and CaF,: x. It is an exceptional case when there is exact agreement...fluorine, though of no great significance otherwise. There is no qualitative test which will reveal with certainty the presence of fluorine in rocks. Heating...
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Bibliography of North American Geology for 1918 with Subject Index

John Milton Nickles - 1919 - 148 Seiten
...and a that of the impure fluoride. It is an exceptional case when there is exact agreement between weight of fluoride and sulphate, and with the small...fluorine, though of no great significance otherwise. If. Accuracy of the method. — It is evident from the above that Ji the greatest care is not taken...
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