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XVII. On the Magnetism of Rocks and Minerals,–I. Serpentine

Published online by Cambridge University Press:  14 March 2018

J. B. Hannay
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Extract

In a former paper I pointed out that it was likely that some of the rocks and minerals at present classed as magnetic were so only by reason of intermixture of a silicate of iron having the formula of Fe 3 O4 2 Si O2, or Fe8 Si2 O8, and that when purified from the particles of this body by pulverization and magnetic sifting, they might be found to be either much less magnetic or even diamagnetic.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 2 , Issue 11 , December 1878 , pp. 194 - 196
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1878

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References

Page 194 Note * On the Magnetic constituents of Rocks and Minerals, Min. Mag., No. 4.

Page 195 Note * D=Density of original mineral, x percentage of magnetic, Δ density of magnetic,   x1 percentage of dimagnetic, Δ1 density of dimagnetic.