ASTM-D2131:2022 Edition

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D2131-22 Standard Classification for Natural Muscovite Mica Splittings

Published By	Publication Date	Number of Pages
ASTM	2022

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Category: ASTM

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Description

ASTM D2131-22

Active Standard: Standard Classification for Natural Muscovite Mica Splittings

ASTM D2131

Scope

1.1 This classification 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.

1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 This standard is very similar to ISO 6386. It is expected that materials would be classified identically using the criteria of either standard. The grades shown under “ASTM Grade No.” in Table 1 and Table 2 are shown under “Old Grade No.” in ISO 6386-1981.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

area; bookform; classification; form; grades; loose with powder; mica splittings; muscovite mica; size; thickness; visual quality;

ICS Code

ICS Number Code 73.080 (Non-metalliferrous minerals)

DOI: 10.1520/D2131-22

Additional information