Some direct measurements of the surface energy of quartz and orthoclase

W. F. Brace; J. B. Walsh

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Research Article| October 01, 1962

Some direct measurements of the surface energy of quartz and orthoclase

W. F. Brace;

W. F. Brace

Dunbar Laboratory, Harvard University, Cambridge Mass.] Woods Hole Oceanographic Institution, Woods Hole, Mass.

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J. B. Walsh

Dunbar Laboratory, Harvard University, Cambridge Mass.] Woods Hole Oceanographic Institution, Woods Hole, Mass.

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Author and Article Information

W. F. Brace

Dunbar Laboratory, Harvard University, Cambridge Mass.] Woods Hole Oceanographic Institution, Woods Hole, Mass.

J. B. Walsh

Dunbar Laboratory, Harvard University, Cambridge Mass.] Woods Hole Oceanographic Institution, Woods Hole, Mass.

Publisher: Mineralogical Society of America

Received: 30 Mar 1962

First Online: 09 Jul 2018

Online ISSN: 1945-3027

Print ISSN: 0003-004X

Mineralogical Society of America

American Mineralogist (1962) 47 (9-10): 1111–1122.

Abstract

Specific surface energy, γ, of quartz ami orthoclase was determined by the Obreimoff-Gilman method, in which the work of cleaving a single crystal is measured. The γ of quartz ranges from about 400 ergs/cm² for (1011) and (1011) to about 1000 ergs/cm² for (1010) and (1120). The γ measured for orthoclase is about 7800 ergs/cm². The γ was calculated from elastic constants for a number of common minerals. The range is from 200 to 2000 ergs/cm².