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Sulpharsenites of lead from the Binnenthal1 with Plate III

Published online by Cambridge University Press:  14 March 2018

R. H. Solly
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Extract

Baumhauer, 1896, Zeits. Kryst. Min. XXVI, 598-602. Crystallography. with Analysis by Bömer. (Abstract Min. Mag. XI, 225.)

Jackson, 1900, Min. Mag. XII, 287. Analyses.

System : Rhombic. a : b : c = 0·4782 : 1 : 0·5112.

These ratios are calculated from 010 : 350 = 51°7′ and 010 : 111 = 70°45′ measured On crystal No. 1 (see p. 81). A new orientation has been chosen for the crystals, so that the well-developed prism zone is vertical, and the cleavage plane, (001) of Baumhauer, becomes (010) to correspond with the cleavage of jordanite. The parametral plane has also been changed, chiefly on account of the pyramid planes.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 13 , Issue 59 , May 1901 , pp. 77 - 85
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1901

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Footnotes

1

Part I, General Description and Chemical Analyses, with a Crystallographic Account of Jordanite. Min. Mag. 1900, XII, 282-297.

References

Page 78 note 1 See Min. Mag. Vol. XII, 286.

Page 81 note 1 Min. Mag. XII, pp. 283 and 287, Nos. 17- 20.