Standard Classification for Natural Muscovite Mica Splittings
NORMA vydaná dňa 1.5.2022
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Designation standards: ASTM D2131-22
Publication date standards: 1.5.2022
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Kategória: Technické normy ASTM
This specification covers the determination of muscovite mica splittings of standard commercial grades and specifies the maximum allowable physical defects for each grade. It is applicable to commercially available natural muscovite mica splittings regardless of the basic color of the mica or its source. This specification covers thirteen grades of mica splittings based on size and form classification. Mica splittings shall meet the specified physical property requirements such as size, thickness, defects, and absence of any foreign matter. Where specified, the visual quality shall conform to the description of the visual category specified such as V-1, V-2, V-3, V-4, V-5, V-5.1, V-6, V-7, V-8, V-9, V-10, V-11, and V-12. The method of sampling of mica splittings in bookform and loose with powder form are specified and method of calculation of defect percentage is given.
Keywords:
area, bookform, classification, form, grades, loose with powder, mica splittings, muscovite mica, size, thickness, visual quality,, ICS Number Code 73.080 (Non-metalliferrous minerals)