Last updated 09/07/24: Online ordering is currently unavailable due to technical issues. We apologise for any delays responding to customers while we resolve this. For further updates please visit our website: https://www.cambridge.org/news-and-insights/technical-incident
We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
Published online by Cambridge University Press: 14 March 2018
Some months ago Professor Henry Louis presented to this college several isolated crystals which he had brought from the Sulitjelma (or Sulitelma) mines in Arctic Norway: they occur there in masses of copper-pyrites and iron-pyrites, for which this district has been famed for some years.
The crystals are of various sizes, ranging in length from 4 to 8 mm. They have a metallic lustre and silver-white colour. The fracture is uneven, and no cleavage is visible. On a freshly broken surface small yellow particles can be seen with the naked eye; these also have a metallic lustre, and are probably iron-pyrites, a probability which is strengthened by the appended chemical analysis. The specific gravity varies from 5.94 to 6.02, and the hardness is just under 5. The crystals are all of a pronounced rhombic aspect.
Page 55 note 1 Dr. Smythe remarks that in the method adopted in the second analysis there was a risk of insufficient washing, so that the lower figure for the iron is likely to he the more correct.
Page 55 note 2 A. W. Stelzner, ‘Die Sulitjelma.Gruben im nördlichen Norwegen. Nach älteren Berichten und eigenen Beobachtungen besprochen,’ Freiberg (Saxony), 1891. Stelgaer's results are quoted by J. H. L. Vogt in Zeits. prakt. Geol., 1894, p. 48; and in Hintze's ‘Handbueh d. Mineralogie,’ 1901, vol. i, p. 863.
