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The crystallization of Parahopeite

Published online by Cambridge University Press:  14 March 2018

A. Levovx ,
T. L. Walker  and
A. C. Wheatley
A. Levovx
Affiliation:
Royal Ontario Museum of Mineralogy, Toronto, Canada
T. L. Walker
Affiliation:
Royal Ontario Museum of Mineralogy, Toronto, Canada
A. C. Wheatley
Affiliation:
Royal Ontario Museum of Mineralogy, Toronto, Canada
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Extract

This species, a hydrous zinc phosphate, Zn3P2O8.4H2O, dimorphous with hopeite, was first described by Spencer in 1907. While the material then available was suitable for the physical and chemical description of the new mineral, it did not permit a full crystallographic investigation. Spencer noted that the crystals resembled in a general way those of hemimorphite, and made sufficient measurements to indicate the triclinic character of the mineral. In his sketch of a crystal he indicates that the mineral is twinned, and that this twinning is best seen on the perfect cleavage which is parallel to the brachypinacoid.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 18 , Issue 84 , June 1917 , pp. 101 - 106
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1917

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References

page 101 note 1 Spencer, L. J., Mineralogical Magazine, 1908, vol. xv, p. 18Google Scholar.

page 105 note 1 Spencer, loc. cit, p. 20.