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The chemical composition and optical characters of Chalybite from Cornwall

Published online by Cambridge University Press:  14 March 2018

A. Hutchinson
A. Hutchinson*
Affiliation:
Mineralogy in the University of Cambridge
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Extract

The acquisition by the Cambridge Mineralogical Museum of a series of well-crystallized specimens of chalybite, raised within recent years from the mines in the neighbourhood of Camborne in Cornwall, afforded a favourable opportunity for an investigation of the chemical composition and optical characters of this substance. This seemed the more desirable since no analysis of the chalybite crystals from the Camborne district appears to have been published, and our knowledge of the optical characters of the substance is confined to some observations of Ortloff on material containing large quantities of manganese carbonate from Wolfsberg in the Harz.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 13 , Issue 61 , February 1903 , pp. 209 - 216
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1903

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References

Page 209 note 1 Zeits. Phys. Chem., 1896, vol. xix, p. 215.

Page 210 note 1 Compare fig. 3, p. 276, of Dana's ‘System of Mineralogy,’ 6th edit., 1892.

Page 213 note 1 Phil. Trans. Roy. Soc., 1880, vol. clxxi, p. 421.

Page 213 note 2 In the figure the faces P and S are slightly removed from their true position for the sake of clearness. In an accurate drawing K and L would lie very close together. OZ is normal to the paper at O.