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A chart for designing modal analysis by point counting

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Zusammenfassung

Diese Arbeit stellt eine Weiterentwicklung derjenigen vonHasofer (1963) undSolomon (1963) dar, die sich mit den Faktoren befaßten, welche die Genauigkeit der Punktezählung bestimmen. Die Autoren haben eine Tabelle entworfen, welche die Wahl der graphostatischen Abstände und des Mustergebietes für einzelne Mineralien erleichtert.

Abstract

Developing the work ofHasofer (1963) andSolomon (1963) concerning the factors controlling the precision of point counting, the authors have designed a chart to facilitate the choice of grid-spacing and sample area for individual minerals. After determining the grain radius, and making a rough estimate of the percentage of the mineral under investigation, suitable combinations of grid-spacing and number of counts can be rapidly determined from the chart.

Résumé

Développant le travail deHasofer (1963) et deSolomon (1963) sur les facteurs qui déterminent la précision du „compte par points“, les auteurs ont élaboré un diagramme pour faciliter le choix du quadrillage et de la superficie d'essai pour des minéraux particuliers.

Краткое содержание

Описан метод точек. Да ны таблицы, облегчающ ие определение как отдельных минералов, так и расстояний межд у ними в породах.

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References

  • Bayly, M. B.: The Sampling Error in Modal Analysis. - Amer. Miner.,50, p. 196–211, 1965.

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  • Chatterjee, P. K.: On the Applicability of the Solomon-Hasofer Relationship for Estimating the Counting and Sampling Error in the Modal Analysis of Natural Rocks. - Bull. Geol. Soc. India.,2., p. 36–39, 1965.

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  • Chayes, F.: Petrographic Modal Analysis. - John Wiley & Sons, Inc. New York, 1956.

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  • Hasofer, A. M.: On the Reliability of the Point-counter Method in Petrography. - Aust. J. Appl. Sci.,14, p. 168–179, 1963.

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  • Nesbitt, R. W.: Combined Rock and Thin Section Modal Analysis. - Amer. Miner.,49, p. 1131–1136, 1964.

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  • Solomon, M.: Counting and Sampling Errors in Modal Analysis by Point-counter. - J. Petrol.,4, p. 367–382, 1963.

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Author notes

  1. M. Solomon &  R. Green

    Present address: Department of Geology, University of Tasmania, Hobart, Tasmania

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    1. M. Solomon
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    2. R. Green
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    Solomon, M., Green, R. A chart for designing modal analysis by point counting. Geol Rundsch 55, 844–848 (1966). https://doi.org/10.1007/BF02029658

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