measures of hardness

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#61

From: Fred Hapgood
Date: Wed, 29 Jul 1992 16:19

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I have been reading in a geology text about something called a
'Moh scale' that quantifies degrees of mineral hardness.  Apparently
some gentleman by that name placed ten minerals in order of hardness
and assigned them the digits 1-10.  This seems primitive.  Is there
a more comprehensive and precise measure of hardness in use?

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Newsgroups: sci.materials
Path: arc1-ca.pugleaf.net!sparky!uunet!world!fhapgood
From: fhapgood@world.std.com (Fred Hapgood)
Subject: measures of hardness
Message-ID: <Bs5s0s.843@world.std.com>
Organization: The World @ Software Tool & Die
Date: Wed, 29 Jul 1992 16:19:39 GMT
Lines: 7