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Electron-optical data for crystals of scarbroite1

Published online by Cambridge University Press:  14 March 2018

G. W. Brindley  and
J. J. Comer
G. W. Brindley
Affiliation:
The Pennsylvania State University, University Park, Pennsylvania
J. J. Comer
Affiliation:
The Pennsylvania State University, University Park, Pennsylvania
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Summary

Electron micrographs of scarbroite show thin platy crystals of about 1 μ size, having rhombic outlines with angles 66° ± 1° and 113° ± 1°. Single-crystal electron-diffraction patterns show rectangular net patterns, with d100 = 9·90 Å., d010 = 14·67 Å., γ* = 90° ± 0·05°. Strong hk0 reflections show a pseudohexagonal arrangement, but true symmetry is probably orthorhombic or monoclinic. Faces outlining rhombic forms are of type {11l}, .

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 32 , Issue 248 , March 1960 , pp. 363 - 365
Copyright
Copyright © 1960, The Mineralogical Society

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References

Duffin, (W. J,) and Goodyear, (J.), 1957. Nature, vol. 180, p. 977.CrossRefGoogle Scholar
Duffin, (W. J,) 1960. Min. Mag., vol. 32, p. 353.Google Scholar