IS 1175 : 1981 Methods for Grading and Classification of Muscovite Mica Blocks, Thins and Films

1 Scope

1.1 This standard describes a standard system of grading andclassifying muscovite mica blocks, thins and films according tosize, visual qualities, and presence of structural imperfections.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 13 :1949Methods for grading processed mica

IS 14 :1949Classification of processed muscovite mica

IS 1076 :1967Preferred numbers

IS 1885 : Part LIII :1980 Electrotechnical vocabulary :Part LIII Mica

IS 9455 :1980Classification of muscovite mica blocks,thins and films based on electricalproperties