1 - AS 2856.3-2000 COAL PETROGRAPHY - METHODS FOR MICROSCOPICAL DETERMINATION OF THE REFLECTANCE OF COAL MACERALS
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENT
6 - 3 DEFINITIONS
6 - 3.1 Repeatability of reflectance measurements
6 - 3.2 Reproducibility of reflectance measurements
7 - 4 PRINCIPLE
7 - 5 MATERIALS
7 - 5.1 Polished block
7 - 5.2 Immersion oil
7 - 5.3 Calibration standard
8 - 6 APPARATUS
10 - 7 PROCEDURE
10 - 7.1 General
10 - 7.2 Setting up the apparatus
11 - 7.3 Checking the reliability and calibration of the apparatus
12 - 7.4 Specimen preparation
12 - 7.5 Measurement of the reflectance
14 - 8 CALCULATIONS
14 - 8.1 General
14 - 8.2 Reporting of results
15 - 9 PRECISION OF RESULTS
15 - 10 TEST REPORT
17 - APPENDIX A - CALCULATION OF ARITHMETIC MEAN AND STANDARD DEVIATION
17 - A1 SCOPE
17 - A2 CALCULATION OF MEAN AND STANDARD DEVIATION FROM UNGROUPED DATA
18 - APPENDIX B - EXAMPLE OF METHOD OF EXPRESSING RESULTS

Sets out method for the microscopical determination of the maximum and random reflectance in oil of polished surfaces of coal macerals.

This Standard sets out methods for the microscopical determination of the maximum and random reflectance in oil of polished surfaces of coal macerals. The methods are applicable to all ranks of coal and may be used for the following purposes:(a) Exploration and preliminary assessment of coal quality.(b) Technological purposes and quality control.(c) Determination of thermal maturation index of petroleum source rocks.NOTES: 1 Reflectance measurements on coal macerals, obtained by interpreting the results of a computerized automated system of microscopic analysis, are outside the scope of this Standard.2 If measurements are made in a medium other than oil, e.g. air, this should be stated.

First published as AS 2486-1981.Second edition 1989.Revised and redesignated as AS 2856.3-2000.Reconfirmed 2013. Originated as AS 2486-1981. Second edition 1989. Revised and redesignated as AS 2856.3-2000.